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  5. Page 3
Home»Posts tagged with»extinction (Page 3)

Rare Fossil Bird Deepens Mystery of Avian Extinctions

By Robert Sanders | University of California-Berkeley on Nov 13, 2018   Featured, Science/Education  

Rare Fossil Bird Deepens Mystery of Avian Extinctions

During the late Cretaceous period, more than 65 million years ago, hundreds of different species of birds flitted around the dinosaurs and through the forests as abundantly as they flit about our woods and fields today. But after the cataclysm that wiped out most of the dinosaurs, only one group of birds remained: the ancestors […]

Did the Chicxulub Asteroid Cause Earth’s Thermometer to Spike?

By Michelle Hampson | AAAS on Jul 15, 2018   Featured, Science/Education  

Did the Chicxulub Asteroid Cause Earth’s Thermometer to Spike?

When the Chicxulub asteroid smashed into Earth 65 million years ago, the event drove an abrupt and long-lasting era of global warming, a new study reports. The results , published in the May 25 issue of Science, suggest that the asteroid impact caused a rapid temperature increase of 5 degrees Celsius (roughly 9 degrees Fahrenheit) that endured for […]

New Study Questions when the Brown Bear Became Extinct in Britain

By Charlotte Anscombe | University of Nottingham on Jul 4, 2018   Featured, Science/Education  

New Study Questions when the Brown Bear Became Extinct in Britain

New research provides insights into the extinction of Britain’s largest native carnivore. The study – ‘The Presence of the brown bear in Holocene Britain: a review of the evidence’ published in Mammal Review – is the first of its kind to collate and evaluate the evidence for the brown bear in post-Ice Age Britain. Previous […]

Site of Asteroid Impact Changed the History of Life

By Kunio Kaiho/Naga Oshima | Tohoku University on Nov 10, 2017   Featured, Science/Education  

Site of Asteroid Impact Changed the History of Life

An asteroid, also known as the Chicxulub Impactor, hit Earth some 66 million years ago, causing a crater 180 km wide. The impact of the asteroid heated organic matter in rocks and ejected it into the atmosphere, forming soot in the stratosphere. Soot is a strong, light-absorbing aerosol that caused global climate changes that triggered […]

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