fossil
The discovery of the 3.7 billion-year-old fossil pushes back earliest life on Earth by 220 million years, raising chances that Mars once had life, when both planets were similar.
New research suggests that a species of unicorn-like horned rhinos went extinct much later than previously thought.
"It’s one of the weirdest turtles that ever lived."
"Stunning" trove of fossils may alter ideas about the human family tree.
WHAT'S HAPPENING
"It really is a fantastic, very very rare and extremely important fossil for evolutionary studies."