Paleoclimatology News | Sci-News.com

A new study shows that an asteroid believed to have smacked Earth some 66 million years ago likely caused a global firestorm that led to extensive plant and animal extinctions (NASA / JPL)

Chicxulub Asteroid May Have Caused Global Firestorm 66M Years Ago

Mar 28, 2013 by Sci-News.com

Chicxulub, an asteroid that collided with the Earth 66 million years ago and is believed to wipe out the dinosaurs, may have triggered a global firestorm...

The Aleutian archipelago and the Alaska Peninsula (Google Maps)

Study Pushes Opening of Land Bridge to Alaska Back 2,000 Years

Jun 29, 2012 by Sergio Prostak

A new study of lake sediment cores from Sanak Island in the western Gulf of Alaska has suggested that deglaciation there from the last Ice Age took place...

This artist's rendition created from a photograph of Antarctica shows what Antarctica possibly looked like during the middle Miocene epoch, based on pollen fossil data (NASA / JPL-Caltech / Philip Bart / LSU)

Mid-Miocene Warming Greened Antarctica

Jun 25, 2012 by Sci-News.com

A team of US researchers, including NASA scientists, has found that ancient Antarctica was much warmer and wetter than previously suspected. This artist's...

Images show melt glass known as trinitite formed at the ground surface from the melting of sediments and rocks by the very high temperatures of the Trinity nuclear airburst in New Mexico in 1945. This material is very similar to the glassy melt materials now reported from the cosmic impact YDB layer, consistent with the very high temperature origin of the melt materials in the YDB layer (University of California / PNAS)

New Evidence of Extraterrestrial Impact

Jun 12, 2012 by Enrico de Lazaro

An international team of researchers has discovered melt-glass material in a thin layer of sedimentary rock in Pennsylvania, South Carolina, and Syria....

Earth Needs 10 Million Years to Recover from Mass Extinction

May 28, 2012 by Sci-News.com

A new study has revealed that it took about 10 million years for Earth to recover from the greatest mass extinction of all time. End-Permian Earth (Christine...

The Earth, as seen from Apollo 17 (NASA / JPL-Caltech)

Study Links Carbon Dioxide to Global Warming During Last Ice Age

Apr 6, 2012 by James Freeman

A team of scientists has established a clear cause-and-effect relationship between rising levels of carbon dioxide and global warming that ended the last...

Study Suggests First Plants Caused Series of Ice Ages

Feb 1, 2012 by Sci-News.com

A team of UK researchers has revealed how the arrival of the first plants 470 million years ago triggered a series of ice ages. The moss Physcomitrella...

Mercury May Have Caused End-Permian Mass Extinction

Jan 6, 2012 by Enrico de Lazaro

For the first time, Canadian researchers have suggested that the Earth’s most severe mass extinction was caused by an influx of mercury into the eco-system. In...