Earth
More Atmospheric CO2 Today Than in the Past 2.1 Millions Years
[/caption] Researchers have been able to determine the atmospheric carbon dioxide levels over the past 2.1 million years in the…
History of Iron Yields New Insight Into Earth’s Deepest Reaches
[/caption] Earth may have given up its innermost secrets to a pair of California geochemists, who have used extensive computer…
Life on Earth — and Other Worlds — Could Last Longer Than Expected
[/caption] Most scientists predict that in about a billion years, the sun's ever-increasing radiation will have scorched the Earth beyond…
With Moon Rocks in Hand, Parazynski Reaches Mt. Everest Peak
[/caption] We've been following former astronaut Scott Parazynski's attempt to climb Mt. Everest, and now comes the news that he…
Cosmic Rays too Wimpy to Influence Climate
[/caption] People looking for new ways to explain climate change on Earth have sometimes turned to cosmic rays, showers of…
European, Chinese Satellites Watch Solar Storms Pummel Earth
Scientists have long understood that satellites are at risk from bombardment by solar storms. Now, they've gotten a closer look…
Submit Your Questions for Scott Parazynski and Keith Cowing
[/caption] Former astronaut Scott Parazynski is making an attempt to climb Mt. Everest, and has been sharing his adventures via…
Despite Global Warming, Wildfire Frequency Does Not Increase
[/caption] As global average temperatures rise, it is widely believed the frequency of wildfires will increase. However, this may not…
Where is the Most Remote Location on Earth?
[/caption] According to a new study, less than 10% of the world's land is more than 48 hours of travel…
A Day for Earth, but a Whole Week for Dark Skies
[/caption] Wednesday is Earth Day, but all week -- Monday, April 20 through Saturday, April 26 -- is National Dark…