Drop in CO2 levels triggered formation of Antarctic ice sheet

A new study suggests that a drop in carbon dioxide (CO2) levels seems to have triggered Antarctic ice sheet formation.Roughly a 40 percent decrease in CO2 occurred prior to and during the rapid formation of a mile-thick ice sheet over the Antarctic approximately 34 million years ago.The long-held, prevailing theory known as "Southern Ocean gateway opening" is not the best explanation for the climate shift that occurred during the Eocene-Oligocene transition when the Earth's polar regions were … Read more at candidshare.com

Initial Phase of Sixth Mass Extinction of Animals on Earth

Previous mass extinctions had happened because of an asteroid impact or an ice age, however this time human beings are playing a predominant role in the decline of animals.

Researchers have revealed that that earth is cruising towards its sixth mass extinction of various animals. The mass extinction is in its early days, but several species are still going extinct with many on the brink. Researchers have blamed human activities and rapidly growing human population for many species going extinct.

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