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This page lays out the major events within the Future of Humanity Timeline, with major divergences being in the early 1940s CE.

20th Century (1900-1999)

First Cold War (1947-1993)

1939-1945 World War II: World War II is fought between the Axis and Allies for six years. The war ends in 1945 as the single deadliest conflict in human history with over 95 million dead. The war leads to the global dominance of the Soviet Union and the United States, as well as the establishment of the United Nations.
1946-1955 American Expansion: The United States purchases Greenland from Denmark in 1946, the ABC Islands from the Netherlands in 1952, and Bermuda, the Cayman Islands, and the Bahamas from the United Kingdom in 1955.
1946-1951 African Wars of Independence: European colonies across Africa declare independence, forming a loose alliance with each other, eventually joining into the growing United African Republics and gaining full independence in 1951.
1947 Beginning of the First Cold War: Many historians consider the implementation of the Truman Doctrine in 1947 as the beginning of the First Cold War, a period of geopolitical tension between the United States and the Soviet Union, along with their respective blocs.
1948-1963 African Bush War: A civilian insurgency against the governments of various African governments by mainly European organizations is waged in the United African Republics long after the Wars of Independence are over.
1950 NATO: The North Atlantic Treaty Organization is formed between some nations of North America and Western Europe, later expanding across the continent.
1950-1953 First Korean War: North Korea invades South Korea, which is assisted by the United States and the United Nations. The war ends in 1953 with a stalemate at the 38th parallel.
1951 European Community: Seeking closer economic and political ties in order to help the continent recover from the Second World War, the Leon Treaty was signed and the European Community was established, which would gradually expand to include most of Western Europe.
1952 Milan Agreement: Facing economic ruin and military strain in their remaining colonies, multiple European colonial empires sign the Milan Agreement, promising either independence or full integration (by referendum) of all remaining colonies within 30 years.
1955-1975 Vietnam War: Communist and Republican forces fight a brutal conflict in Vietnam, Laos, and Cambodia, with both sides supported by their respective global blocs. The war ends in 1975 with the defeat of the republican forces and the establishment of the Indochinese Union.
1957-1969 First Space Age: The launch of the first artificial satellite by the Soviet Union begins the First Space Age, mainly consisting of a race to land the first humans on Luna.
1961-1963 South African War: South Africa, the only majority-white state on the continent, falls into civil war between the white upper class and African underclass. The civil war results in an intervention by the United African Republics and eventual annexation of South Africa.
1962 Cuban Missile Crisis: The deployment of Soviet nuclear bombs to Cuba triggers an international incident that almost brings the world to nuclear war. The conflict is resolved with both the Soviet Union and the United States withdrawing nuclear weapons from Cuba and Turkey.
1963 Suez War: Israel goes to war with it's neighboring nations, primarily Egypt, over control of the Suez Canal, Sinai Peninsula, and Jordanian West Bank. The war ends after 11 days with an UN-facilitated joint-administration area over the Suez Canal and the Israeli annexation of the West Bank.
1964 Commonwealth of Oceania: The former British commonwealths of Australia and New Zealand are merged into the Commonwealth of Oceania, including British holdings in the South Pacific.
1969 Andes Cooperative Union: The ACU is created between Colombia, Ecuador, Peru, and Bolivia.
1969 First Lunar Landing: The American Apollo 11 mission becomes the first to land humans on the surface of Luna.
1971-1978 Second Spanish Civil War: The assassination of Francisco Franco plunges the Spanish State into a three-way civil war, with Republican and Socialist factions supported by their respective global blocs. The war ends in 1978 with a victory for the Republican faction and the establishment of the Third Spanish Republic.
1977 Union of Arab Republics: The Union of Arab Republics (later the Union of Mashriq Republics) gains independence from the United Kingdom.
1980 Shangri-La Agreement: A diplomatic summit between the Israeli government and various Palestinian political leaders in the United States results in the creation of Israel-Palestine.
1982-1987 Iran-Iraq War: Iran and Iraq go to war over the dominance of the Persian Gulf. The war ends in a stalemate, resulting in extremist insurgencies within both countries.
1985 Reykjavik Summit: American and Soviet leaders meet in Reykjavik, Iceland. The resulting agreement states that both the United States and the Soviet Union will work to eliminate all nuclear weapons within 20 years.
1986 Falklands War: Argentina briefly invades the British Falkland Islands, being repelled two months later by a joint British-American force. The brief conflict sours relations between Latin America and Northern America & Europe.
1987-2002 Third Mexican Revolution: The assassination of Mexican President Luis Álvarez launches Mexico into a brutal civil war between the national government, socialist forces, and various guerilla forces.
1988 Reunification of Germany: East and West Germany are reunified after 43 years of division following World War II. The new German state is declared officially neutral and is not allowed to join any formal US or Soviet-led alliance for 15 years.
1989 Shuttle-Buran: American Space Shuttle Atlantis and Soviet Buran-orbiter Ptichka dock in Low Earth Orbit. Their crews would meet, shake hands, and exchange gifts. The mission would effectively end the Space Race and begin cooperation between nations in space.
1990-1993 Yugoslavian Revolution: A republican uprising begins against the communist government of Yugoslavia, partially supported by the United States and European Community. The war results in the disbandment of the communist government and the creation of the United Balkan States.
1993 European Union: The Strasbourg Treaty is signed, dissolving the European Community and establishing the European Union in it's place, allowing for deeper political and economic cooperation between its member states.
1993 End of the First Cold War: At the Malta Summit, American and Soviet leadership would declare an end to the cold war and a 'resetting' of diplomatic and political relations between the United States and the Soviet Union.

Great Interlude (1993-2022)

1993-1996 US-Soviet Summits: A series of diplomatic summits would be held between the United States and the Soviet Union, sometimes involving leaders of other countries as well. The summits result in the signature of multiple treaties dealing with arms control, trade, and other political issues.
1994 International Space Station: The first piece of the International Space Station is launched by the Soviet Union. More modules would be added by other countries between 1994 and 2027.
1994-1999 Kashmir War: War breaks out between and increasingly nationalist India and neighboring Pakistan. The war is more-or-less a stalemate, with both sides refraining from using their nuclear arsenals under threat of outside intervention and global consequences. The war ends in 1999 with India annexing parts of Kashmir & subsequently proclaiming the Bharat Republic.
1996 Union of South American Nations: The La Paz Accords transform the Andes Cooperative Union into the Union of South American Nations, fostering closer political and economic ties between the member states.
1997 Union of Eurasian Republics: After nearly two decades of political and economic reform, the Soviet Union is dissolved and the Union of Eurasian Republics is formed in its place.
1999 Oceanic Independence: The Commonwealth of Oceania formally votes for independence from the United Kingdom, establishing the Oceanic Republic.

21st Century (2000-2099)

Great Interlude (1993-2022)

2001 1-10-1: The October 1st Attacks in the United States see nearly 3,000 people killed in coordinated terror attacks in New York City and Washington DC. The event kicks off coordinated global action against terrorist organizations, primarily in the Middle East.
2001-2038 War on Terror: Coordinated global action against terrorist organizations worldwide primarily by the United States and it's allies.
2003-2016 Second Chinese Civil War: The People's Republic of China dissolves into fighting between the communist government, a large republican alliance supported by the Western Bloc, and numerous separatist factions. That war ends in 2016 as the deadliest conflict since World War II with the dissolution of the PRC and the establishment of the Chinese Second Republic.
2004-2007 Second Korean War: A naval skirmish between North and South Korean naval forces boils over into a full-scale conflict, with a US-led coalition seeking to secure the North's small nuclear arsenal, while both Koreas seek to absorb the other. The war ends in 2007 with South Korea annexing the North and forming the United Korean Republic.
2006-2049 Return of the Nuclear Age: In 2006, North Korea would detonate three battlefield nuclear weapons against enemy forces, officially returning nuclear weapons to warfare for the first time since World War II.
2006 Baltic Union: The former Soviet states of Estonia, Latvia, and Lithuania form the Baltic Union, with the capital in Riga.
2007 NACA: The North American Cooperation Association is established primarily between the United States, Canada, and Mexico, as well as some other Central American and Caribbean nations.
2007 Lunar Colonization: Horizon Base is established in June 2007 as the first permanently-inhabited base on Luna. It is followed in Korolev Base in 2008 and New Jamestown, the first civilian colony, in 2010.
2008 2008 Recession: The collapse of the housing bubble in the United States sends the world into a recession which lasts roughly twenty months. In this time, global economic growth dropped by approximately 3.8%.
2009 Ankang Nuclear Incident: The misfire of a Chinese nuclear missile results in the detonation of a 4.2 megaton nuclear warhead near Ankang, China. The first nuclear weapon used in warfare since World War II kills an estimated 60,000 civilians and injures another 250,000.
2011 Turkish State: An increasingly authoritarian and militarist Turkey begins to withdraw from the Western Bloc. In 2012, Turkey annexes most of Syria and Lebanon and in 2015 withdraws from NATO, seeking closer ties to the Eurasian Union.
2015 26/06/15: Simultaneous terror attacks across the European Union plunge the continent into chaos for nearly 24 hours. Attacks in 14 European cities kill nearly 2,300 civilians and injure over 4,000.
2016 Rise of Bharat: The Bharat Republic annexes the smaller states on its periphery, bringing on global commendation in the process over this alongside it's growing nuclear arsenal and military.
2017 Growth of the UAR: The Union of Arab Republics (later the Union of Mashriq Republics) is joined by neighboring Iraq and Oman. Jordan and an increasingly unstable Yemen also enter into talks for membership, joining in 209 and 2023, respectively.
2018 UNSA: The United Nations Space Administration is chartered between NASA, JSDA, the ESA, and Eurcosmos, promoting increased cooperation and partnership in space.
2019 First Mars Landing: Ares 1 touches down in Lophoron Crater, bringing the first six humans to the surface of Mars.
2019 Mass Lunar Colonization: The Luna Accords are signed, officially authorizing and setting terms for large-scale civilian colonization of Luna. Within two decades, thousands would flock to cislunar space and establish colonies.
2019-2084 Global Warming Crisis: Between the late 2010s and late 2020s, large parts of Arctic and Antarctic ice sheets would break off into the sea. This along with increasing global temperatures would result in harsher weather and the slow rise of sea levels worldwide.
2019-2045 The Upheaval: Economic recession, the destruction of infrastructure systems all over the world, growing political tension between the two global blocs, and the movement of millions of people as the result of global warming result in social and political unrest worldwide.
2020 End of the British Commonwealth: Following the deaths of Elizabeth II in March and George VII in October, the Commonwealth of Nations dissolves, with most remaining nations forming republics.
2020-2050 Third Industrial Revolution: The first half of the 21st century, particularly the 2020s and 2030s, would see dramatic shifts to green technologies, an ever-increasing rate of automation, and the proliferation of new systems requiring intensive engineering and development.
2021 PESCI: The Eurasian Union, Bharat, Turkey, and Turkestan form the Pan-Eurasian Strategic Cooperation Initiative, establishing mutual defense and economic assistance.
2021 AEDU: The Asian Economic and Defensive Union is established between Japan, China, and Korea, later expanding to include parts of Southeast Asia.
2021 Scandinavian Confederation: Sweden and Norway vote to unite into the Scandinavian Confederation, with the capital in Gothenburg.

Second Cold War (2022-2048)

2022 Beginning of the Second Cold War: Many consider the 2022 State of the Union address in the United States, which heavily criticized Eurasian actions and called for greater American military & diplomatic cooperation with US allies, as the unofficial beginning of the Second Cold War.
2022 Rise of Indonesia: An increasingly Islamist and Nationalist Indonesia withdraws from ASEAN and joins PESCI.
2022 Asteroid Mining: Asteroid 10302-Roosevelt is towed into lunar orbit by the United States, the first country to do so. Roosevelt is the first of over 200 asteroids towed into Earth's sphere during the 21st century.
2023 World Climate Change Summit: Representatives from most nations on Earth meet in Paris to discuss coordinated action against Global Warming. The Paris Convention results in all signatories agreeing to phase out dirty energies and to go carbon-neutral or carbon-negative within 45 years.
2023-2026 Mexico in Anarchy: Growing political corruption, economic stagnation, and the effects of global warming throw Mexico into anarchy between the central government and numerous political factions.
2024 American Intervention in Mexico: The United States offers military assistance to the Mexican central government and is accepted, secretly being turned over Baja California in the process. American troops come to occupy and eventually annex the states of Rio Grande and Sonora. The United States receives heavy criticism from the Eurasian Union and USAN.
2025 Canada joins the United States: The recently-established Canadian Republic narrowly votes to join the United States. They are annexed in 2025 and all provinces are officially admitted as new states in July 2026.
2025 Nuclear Rearmament: 2025 is the first year since 1985 in which the number of nuclear weapons on Earth increased, totaling 16,291. Nuclear rearmament (primarily in the United States and Eurasian Union) would reach a peak of 20,370 in 2045.
2026 Caribbean Collapse: Rising sea levels, increasingly bad weather, and a local recession drive most Caribbean nations into economic ruin and political collapse. Thousands flee both northward to the United States and southward into Central American and the USAN.
2026 Reyes Proposition: Prompted by the collapse of Mexico and the Caribbean, the United States extends an offer of economic assistance in exchange for annexation, with the promise to become a state within ten years of annexation. Over this offer is accepted by numerous countries in the Caribbean and Central America.
2026 USAN Unites: The Montevideo Treaty establishes common foreign policy, law, trade policy, and defense between all USAN members, effectively creating a single country.
2026-2028 First Phobos and Deimos Landings: Eris 1 and Eris 2 land on Phobos and Deimos as part of the Ares 4 and Ares 5 missions, respectively.
2027 Eurasian Expansion: The Eurasian Union annexes Turkestan, brining condemnation from the United States and European Union.
2027-2035 Iranian Collapse: The assassination of the Iranian Ayatollah results in Iran breaking apart into civil war between the central Islamic government and a variety of opposition forces. Both The Union of Arab Republics and Eurasian Union intervene, with the support of their respective blocs. The Collapse ends in 2035 with the Eurasian Union occupying Southern Azerbaijan and Golestan, with the Union of Arab Republics (which soon changes its name to the Union of Mashriq Republics) annexing the rest.
2028-2039 Lunar Commonwealths: Between 2028 and 2039, eight extraplanetary holdings are formed on Luna.
2030-2051 Golden Age of Malaccan Piracy: The opening of the Kra Cana lin 2028 leads to an explosion of piracy throughout Malacca and the South China Sea, partially facilitated by an increasingly-unstable Indonesia.
2032 Cuba Collapses: The assassination of Alejandro Castro throws Cuba, a Eurasian ally, into anarchy. American troops intervene as 'peacekeeping forces' and effectively annex the island nation, drawing condemnation from PESCI.
2032 First Martian Colonization: Tharsistown, the first permanently-inhabited Mars base, is established by the crew of Ares 8.
2033-2040 Zagros War: Remnant forces loyal to the Iranian government engage in a brutal guerilla war against both the Union of Mashriq Republics and the Eurasian Union.
2034-2035 Second Falklands War: A pro-USAN insurgency takes over the western half of the Falklands, prompting a military response by the European Union that puts it at odds with the USAN and PESCI.
2035 Nuclear Fusion: An experiment in the United States results in the first controlled use of nuclear fusion for energy production. A similar experiment is conducted in 2036 by the Eurasian Union. Within a decade, Nuclear Fusion becomes a viable source of energy production and spreads worldwide.
2036 Fall of Turkey: Months of protests against the political establishment, economic inequality & recession, and the military complex in Turkey leads to the total collapse of the country. Syria & Lebanon immediately join the UMR while a guerilla war is fought against Eurasian forces who advance into Anatolia.
2037 Panama Crisis: As a result of growing economic tension between the USA and USAN, the latter closes the Panama Canal from all military traffic from the USA and it's sphere, and limits commercial travel from the same. The closure results in a 6-month economic standoff which drives the world into recession. The crisis is resolved when the Panama, Kiel, and Kra Canals are all open to free travel.
2039-2044 Pakistan and Afghanistan: Afghanistan fragments into several warring states, which are quickly absorbed the UMR and allied Pakistan, which itself joins the UMR in 2044.
2041 Fall of Indonesia: Still reeling from the 2037 Recession, the central government of Indonesia collapses. The AEDU sets up a democratic government on Sumatra, while the Oceanic Republic sets up several protectorates within the rest of the archipelago, which are integrated throughout the 2060s and 2070s.
2042 First Ceres Landing: Demeter 1 touches down on the surface of Ceres, carrying a team of 8 astronauts.
2042 Phobos and Deimos Colonization: Laputa and Hall Bases are established on Phobos and Deimos, respectively. The bases act as a gateway to ships entering Mars orbit.
2042-2058 Aztlan War: A guerilla war is fought against the United States in Mexico, primarily against the American integration of the Mexican states.
2043 Colonization of Orbit: Conquistador Station is constructed in Lunar Orbit, providing ample habitation for 5,000 residents. It is the first of dozens of permanent orbital habitats constructed around Earth and Luna.
2043 Zilant Station Incident: A rogue Orbital Debris Maintenance vehicle crashes into the Eurasian Zilant Station in Earth orbit, killing all aboard. The incident briefly raises tensions between the European Union and Eurasian Union before the incident is attributed to the mental decline of the European orbital debris technician in charge of the vehicle.
2043-2046 Golden Eye Syndrome: An outbreak of a new disease quickly spreads out of Gujarat, Bharat. While relatively harmless to humans, the disease infects and kills over 85 million domestic and wild animals.
2046 AEDU Unites: The Shanghai Protocol establishes common foreign policy, military, civil law, and trade between all AEDU members, effectively creating a single country with the capital in Shanghai.
2047 European Unification: After years of debate, a vote to unify the European Union into a single federation passes, officially establishing the European Federal Union.
2048 Eurasian Revolution: A coup against Eurasian President Alenin Petrov results in the dissolution of the Eurasian Union and the formation of the Eurasian Association. During this time, several regions on the border break away and join the European Union, UMR, and Japan (part of the AEDU).
2048 End of the Second Cold War: Eurasian and American leadership meet at a summit in Algiers, proclaiming an end to the Second Cold War and establishing a new, cooperative relationship between the two global blocs.

Stabilization Era (2048-2093)

2049 Lausanne Summit: A year after the end of the Second Cold War, the nuclear-armed nations of the world meet in Lausanne to establish a denuclearization program. Each country agrees to scale down their nuclear arsenals over the next few decades, with all nuclear weapons being gone by 2140.
2050-2064 Federalization of the European Union: The first two decades of the European Federal Union's existence would be marked by a period of political struggle between the central government in Brussels and the various states.
2050 Ares Concordat: 31 years following the first manned Mars landing, the Ares Concordat is signed, establishing the rules and setting a plan for the mass colonization and terraforming of the planet.
2051 Carbon Neutral: Growing green technologies, the proliferation of nuclear fusion, and small-scale geoengineering projects result in human civilization being more-or-less carbon neutral.
2052 Cairo Agreement: The European Union, Eurasian Association, Union of Mashriq Republics, and AEDU meet and agree to settle all pre-existing land disputes which came as a result of the Second Cold War and Eurasian Revolution.
2054 Israel-Palestine joins the UMR: The Beirut Deal makes Israel-Palestine an associated state of the UMR. The country would later be fully absorbed as the republics of Israel and Palestine-Sinai in 2088.
2056 Growing Offworld Population: The population of Luna nears 400 thousand, while the population in Earth Orbit nears 5,000. Less than a decade after mass colonization was permitted, Mars' population surpasses 20,000.
2057 De-extinction: The passenger pigeon is officially declared 'unextinct' after revival by Genesis Incorporated, the first of several revived species to date.
2058 First Martian Boom: The massive influx of colonists to Mars would result in a boom of industries relating to bringing in and accommodating new residents. The Boom would last until the early 2060s.
2060 Second United Nations Charter: The United Nations is rechartered. The Security Council is reformed into the Executive Council (headed by the Secretary-General), the General Assembly is split into the General and Parliamentary Assemblies, and the International Court of Justice is made the official judicial branch of the UN. The Charter also gives the UN sweeping new powers.
2062 UN Administrative Zones: The United Nations uses its new powers to claim jurisdiction over multiple areas of Earth (with their owner countries' permission), mostly to serve as protected nature preserves and world heritage sites.
2063-2071 Fossil Crisis: The discovery of fossils of live native to Mars throws both Mars and Earth into chaos. Calls for the end of terraformation are heeded when the UNSA suspends terraforming and colonization indefinitely while an astrobiological survey is done, forcing the rudimentary Martian economy into a depression. Colonization would be allowed to resume in 2065, but terraforming activities would be halted.
2064 Planet Nine: Tartarus, the ninth planet of the Sol System, is discovered by the Deep Sight Space Telescope.
2064 Ceres Colonization: Demeter Base is set up on Ceres, the first permanently-inhabited colony in the Main Asteroid Belt.
2065-2067 2060s Recession: The collapse of the defense industry and the transition to the space economy cause a worldwide recession.
2067-present Mass Geoengineering: Large scale geoengineering projects begin during the late 2060s and early 2070s. The Aral Sea is refilled, Africa begins to construct a series of artificial seas in the Sahara, and Oceania begins a massive project to turn the Outback into lush grassland, complete with a large inland sea.
2067 Euphrates Exclusion Zone: Lake Tabqa in the Union of Mashriq Republics is quickly put under UN jurisdiction, with its nearly 40,000 citizens quickly relocated. The area is still under heavy security.
2071 End of the Fossil Crisis: The 2063 Martian Astrobiological Survey ends with no present life being found on Mars. Terraforming is allowed to resume, albeit under new regulations.
2072-2082 Exploration of Venus: The Ishtar Program sends multiple manned missions to the cloud tops of Venus, each carrying 8 astronauts to a large, blimp-like base.
2072 Mass Colonization of Mars' Moons: The bases of Phobos and Deimos undergo massive expansions and open to civilian colonization, skyrocketing the moon's populations.
2073-present First Space Renaissance: Extraplanetary populations continue to skyrocket, with approximately 4.5 million humans living outside Earth in 2075, increasing to nearly 5 million in 2080. By 2110, the total Offworld population would be approximately 16 million.
2073-2085 Second Martian Boom: With the end of the Fossil Crisis, the Martian population begins to skyrocket. The planetwide population was recorded at 705,000 in 2070, increasing to 1.8 million in 2080.
2078 Catholic Rift: The election of Pope Stephen XII causes to informal secession of most of the diocese of North & South America, which form the New World Catholic Church.
2080-2085 African Reforms: The United African Republics undergoes a period of great political reform in the early 2080s, culminating in the establishment of the African Federation in 2085.
2082-present Aphrodite Program: The Aphrodite Program uses semi-permanent floating bases to harvest Venusian CO2 to thicken the atmosphere of Mars.
2084 End of the Global Warming Crisis: In the mid-2080s, Global CO2 emissions reached a record low, and sea-level rise began to slow at 0.85m above pre-Anthropocene levels. Despite this, more than 200 million people had been displaced and the economic toll stood at nearly $100 trillion.
2089 UNAMM: The United Nations establishes the United Nations Administration for the Martian Moons on Phobos and Deimos, technically the first nation beyond Earth and Luna.
2093 Bharat joins the AEDU: The Asian-Bharati Treaty of Friendship and Cooperation is signed, bring Bharat into the AEDU under a modified version of the Shanghai Protocol.

Pax Solaris (2093-present)

2094 Addis Ababa Earthquake: The capital city of the African Federation is struck by an 8.1-magnitude earthquake, leveling most of the city and killing nearly five thousand. The government is relocated to an emergency capital in Dar es Salaam and is expected to stay there until at least 2115.
2097 Cupid: Asteroid 2004 FY19 is moved into a stable orbit around Venus, becoming an artificial moon of the planet used to coordinate gas-extraction operations within the atmosphere.

22nd Century (2100-2199)

Pax Solaris (2093-present)

2100 First Space Elevator: The UNSA begins the construction of the Bifrost Space Elevator in Gabon. Construction is expected to end by 2120.
2103 Xōchipilli: Asteroid 1989 QZ11 is moved into a stable orbit of Ceres, becoming the dwarf planet's moon for the purposes of mining.
2103 Armstrong Spaceport: Construction begins on Armstrong Spaceport on Luna, the first fully independently-operating spaceport off of Earth.
2105-present Martian Holdings: As of 2110, two extraplanetary holdings have been created on Mars. More are expected to be created in the coming decade.

Projected Future Events

22nd Century

2112 Manned Exploration of Jupiter: The Zeus-1 mission will arrive in the Jupiter system around June 2112, exploring for three years before departing again in 2115, finally returning to Earth in 2118.
2120 Phobos and Deimos: The UNAMM estimates that the hollowing-out of Phobos and Deimos will be complete by 2120. The interiors of both moons will be paraterraformed to provide for more living space.
2140 End of Nuclear Weapons: According to the Lausanne Treaty, all nuclear weapons will have been dismantled by 2140.
2145 Growing Offworld Populations: Mars' population will surpass 10 million, while Luna will surpass 17 million.
2160 Earth's Slowing Population Growth: Earth's population will surpass 11 billion around 2160, 55 years after surpassing 10 billion. Population growth is expected to slow and even plateau at around 12 billion as off-world populations continue to grow.
2190 Climate Reversal: Some scientists predict that Earth may begin cooling down, with sea levels dropping back to Pre-Anthropocene levels near the end of the 22nd century.

Past 22nd Century

2250 Mars Habitable: Mars' atmosphere will have an average surface pressure of about 1 standard atm, with an average surface temperature of about 5°C, making it almost fully habitable for humans without much assistance.
2300 Earth's Recovery: The United Nations Global Climate Security Office (UNGCSO) projects that if global climate change does reverse, Earth's atmosphere and climate will have fully recovered from the Industrial Revolution by around 2300.
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