The fingers of Repenomamus are locked tightly around the dinosaur's jaw and its teeth are sunk deep into the ribs of Psittacosaurus. This fossilized scene seems to capture a fight ...

Dinosaurs were not exactly how we imagined them! These 8 groundbreaking fossil discoveries have completely changed what we thought we knew about prehistory. From feathered dinosaurs to unexpected ...

Did dinosaurs lose their dominance suddenly or gradually? Some scientists think the answer lies locked within the remnants of long-dormant volcanoes. Massive beds of ancient lava found around the ...

Randall has authored several books, including the recent "Dark Matter and the Dinosaurs." Produced by Ruchika Agarwal Follow BI Video: On Facebook More from Science Harvard Physicist Lisa Randall ...