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  2. History of YouTube - Wikipedia

    en.wikipedia.org/wiki/History_of_YouTube

    According to YouTube, this was the first worldwide free online broadcast of a major sporting event. [ 96 ] On March 31, 2010, YouTube launched a new design with the aim of simplifying the interface and increasing the time users spend on the site.

  3. Carbon - Wikipedia

    en.wikipedia.org/wiki/Carbon

    Carbon (from Latin carbo 'coal') is a chemical element; it has symbol C and atomic number 6. It is nonmetallic and tetravalent—meaning that its atoms are able to form up to four covalent bonds due to its valence shell exhibiting 4 electrons. It belongs to group 14 of the periodic table. [13] Carbon makes up about 0.025 percent of Earth's ...

  4. Chemistry: A Volatile History - Wikipedia

    en.wikipedia.org/wiki/Chemistry:_A_Volatile_History

    Having started with only diamond and oxygen, and produced a gas which contains only carbon and oxygen, Tennant had discovered that diamonds are made of carbon. Unaware of atomic theory at the time, scientists were unable to explain how carbon, already known to exist as one of the softest substances in the form of graphite , could also be the ...

  5. Fossil fuel - Wikipedia

    en.wikipedia.org/wiki/Fossil_fuel

    In 2022, over 80% of primary energy consumption in the world and over 60% of its electricity supply were from fossil fuels. [5] The large-scale burning of fossil fuels causes serious environmental damage. Over 70% of the greenhouse gas emissions due to human activity in 2022 was carbon dioxide (CO 2) released from burning fossil fuels. [6]

  6. Geochemistry of carbon - Wikipedia

    en.wikipedia.org/wiki/Geochemistry_of_carbon

    Carbon makes up only 0.08% of the combination of the lithosphere, hydrosphere, and atmosphere. Yet it is the twelfth most common element there. In the rock of the lithosphere, carbon commonly occurs as carbonate minerals containing calcium or magnesium. It is also found as fossil fuels in coal and petroleum and gas.

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  9. Climate change video game - Wikipedia

    en.wikipedia.org/wiki/Climate_change_video_game

    An in-game screenshot from Fate of the World, a global warming game. A climate change video game, also known as a global warming game, is a type of serious game.. As a serious game, it attempts to simulate and explore real life issues to educate players through an interactive experience.