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This Day in History
On this day in 1965, President Lyndon B. Johnson signs Medicare, a health insurance program for elderly Americans, into law. At the bill-signing ceremony, which…
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In a pile of unpromising dinosaur fossils dug up in Canada a century ago, British scientists find soft tissue materials preserved for some 75 million years.
According to new research, the oldest horned dinosaur ever found in North America lived around 107 million years ago, in what is now southern Montana.
A distant cousin of Tyrannosaurus rex and Allosaurus, it likewise dined on meat.
In the long-running debate over whether dinosaurs were cold-blooded or warm-blooded, new research has suggested a middle ground.
Using old photographs and cutting-edge technology, scientists have digitally reconstructed a prehistoric dinosaur chase through an ancient riverbed in Texas.
A newly discovered species of tyrannosaur roamed the ancient Arctic 70 million years ago and was about half the size of its close cousin, Tyrannosaurus rex.
The giant asteroid that hit Earth some 65 million years ago may have propelled rocks big enough to shelter life all the way to Mars and the moons of Jupiter.
Researchers worry that black-market dino bones will be lost forever to science.
Researchers make a rare find: thousands of dino tracks along the Yukon River.
A new study of fossilized dinosaur eggs provides evidence of similarities between the nesting behaviors of dinosaurs and their closest living relatives – birds.
Theropod dinosaurs like Tyrannosaurus rex held their own in the water, according to new evidence.
Researchers believe the very first birds inherited a four-wing configuration from their dinosaur ancestors.
As 2012 comes to an end, explore some of the year’s stories, as covered by History in the Headlines.