cretaceous

Rare Fossil Bird Deepens Mystery of Avian Extinctions

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

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 […]

Dinosaur-Killing Asteroid Impact May Have Cooled Earth more than Previously Thought

By American Geophysical Union on Nov 1, 2017 Science/Education

WASHINGTON D.C. — The Chicxulub asteroid impact that wiped out the dinosaurs likely released far more climate-altering sulfur gas into the atmosphere than originally thought, according to new research. A new study makes a more refined estimate of how much sulfur and carbon dioxide gas were ejected into Earth’s atmosphere from vaporized rocks immediately after the […]

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