Scientists discovered that Heliconius butterflies have evolved an extraordinary lifespan, living several times longer than ...

Tyrannosaurus rex may have been a much slower grower than scientists realized. A new study of 17 tyrannosaur fossils found that the giant predator likely took about 40 years to reach its full size of ...

When The Washington Post’s management axed Book World in February, it wasn’t just one casualty among hundreds of layoffs; it was the latest high-profile death blow to a newspaper book review section ...