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climate change
Table of Contents
References & Edit History Quick Facts & Related Topics
Images, Videos & Interactives
Grinnell Glacier shrinkage
The problem with climate change explained by Bill McKibben
climate change: timeline
What's the problem with an early spring?
iceberg Karakum Desert, Turkmenistan deciduous trees
What is cloud seeding and can it be used to fight climate change?
The impact of human activities on climate change
precession
For Students
Combination shot of Grinnell Glacier taken from the summit of Mount Gould, Glacier National Park, Montana in the years 1938, 1981, 1998 and 2006.
Pop Quiz: 18 Things to Know About Global Warming
Quizzes
rain. Child in the rain, wearing a rain coat, under a yellow umbrella. April Showers weather climate rain storm water drops
April Showers to March’s Lions and Lambs
Cyclone winds in aerial of clouds. (hurricane; storm; wind) This image is most likely digitally altered.
Climate Change
Iceland, Glacier lagoon (Jokulsarlon)
Winter Weather Words Quiz
Related Questions
Read Next
Cracked ice in Arctic Ocean (ice floe; ice flow; ice formation; melting ice; glacier)
Is Climate Change Real?
A timeline of important 20th- and 21st-century carbon emission/science dates. climate change, infographic. SPOTLIGHT VERSION
Timeline of Climate Change
Brown layer of Los Angeles smog; photo taken on November 10, 2016.(California, environment, smog)
What's the Difference Between Global Warming and Climate Change?
Polar bear leaping among ice floes at Spitsbergen, Svalbard archipelago, Norway, the Arctic. Sea ice climate change mammal jump global warming
A Recent History of Climate Change
High-oblique view of the extra-tropical unnamed cyclone that merged with Hurricane Earl is featured in this image taken by an Expedition 24 crew member on the International Space Station (Sept. 2010).
Is the Number of Hurricanes Increasing?
Discover
Ice Sledge Hockey, Hockey Canada Cup, USA (left) vs Canada, 2009. UBC Thunderbird Arena, Vancouver, BC, competition site for Olympic ice hockey and Paralympic ice sledge hockey. Vancouver 2010 Olympic and Paralympic Winter Games, Vancouver Olympics
10 Best Hockey Players of All Time
Stylish light blue jeans on wooden background, closeup of inset pocket
Why Do Jeans Have That Tiny Pocket?
The Jeff Koons tulips sculputure outside the Guggenheim Museums in Bilbao, Spain, Basque Country.
What’s the Difference Between Modern and Contemporary Art?
Scottish fold cat. A genetic mutation caused (in the original cat-1961) the ears to bend forward and down.
Shorthair Cat Breeds
A mug shot taken by the regional Colombia control agency in Medellin
Pablo Escobar: 8 Interesting Facts About the King of Cocaine
Coriander leaves, fresh green cilantro on wooden background, herbs
Why Does Cilantro Taste Like Soap to Some People?
Four year old boy with grandfather and father lighting Hanukkah menorah. Photo taken on: December 21st, 2009
Which Is Correct: Hanukkah or Chanukah?

Astrophysical studies indicate that the luminosity of the Sun was much lower during Earth’s early history than it has been in the Phanerozoic. In fact, radiative output was low enough to suggest that all surface water on Earth should have been frozen solid during its early history, but evidence shows that it was not. The solution to this “faint young Sun paradox” appears to lie in the presence of unusually high concentrations of greenhouse gases at the time, particularly methane and carbon dioxide. As solar luminosity gradually increased through time, concentrations of greenhouse gases would have to have been much ...(100 of 12125 words)

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