Ancient heat wave?Breaking News
About 55 million years ago, an intense heat wave hit the planet. Earth's surface temperature surged by 9 degrees Fahrenheit (5 degrees Celsius). Then, after a relatively short time, the heat subsided, only to be followed by at least two similar, but smaller heat waves.
Based on chemical clues preserved in rocks, scientists believe a surge of carbon dioxide warmed the planet. But where did all of this greenhouse gas come from?
A team of scientists is proposing that it came from the melting of permafrost, frozen soil packed with organic matter, after cycles in the Earth's orbit warmed up the areas near the poles. The melting released a massive amount of carbon into the atmosphere, keeping reflected sunlight from escaping and causing the heat wave....
comments powered by Disqus
- Veteran Congressman Still Pushing for Reparations in a Divided America
- Hitler's phone, 'the most destructive 'weapon' of all time,' sold for $243,000
- NYT features fascinating story about Ford’s fantasyland in Brazil
- Mark Zuckerberg issues manifesto on the future of Facebook that rests on insights of Israeli historian Yuval Harari
- Migration To Americas Came in Waves, According to Big Data
- Trump Chooses Historian H.R. McMaster as National Security Adviser
- Holocaust Historian Deborah Lipstadt Explains Why People Believe Trump's Lies
- Princeton’s Harold James warns World War Three is now a "serious threat”
- Israeli schools' history lessons create good soldiers, says pundit
- Yuval Noah Harari foresees a god-like future for humans