Only 20,000 lived at any given time, though.
Critters around the world have contracted the coronavirus, and some apes are even vaccinated.
Harsh conditions may have led to this surprising evolutionary trait.
Azhdarchid pterosaurs are also the largest ever flying vertebrates.
These insects can go through intense but reversible bodily changes.
Make sure your yard isn't a bacteria breeding ground that kills birds and sickens people.
High levels of biodiversity in Brazil could be lost to unchecked deforestation.
No, your eyes do not deceive you: They’re really, really pink.
The giant teeth can reveal clues about pollutants in the Narwhal's diet.
A new government report cites decades-long declines of greater sage-grouse and offers a framework to save the species.
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