If scientists could resurrect extinct animals — such as the dodo, Columbian mammoth or Tasmanian tiger — should these animals have different names that distinguish them from the original species?
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The species, which haven't been seen for years or decades, include pink-headed ducks, red-thighed monkeys and a seahorse no one's ever seen in the wild.
If humans were to go extinct, would it be ethical to revive the species, to allow us to live once more on this blue planet?
Sponges may be simple creatures, but they basically ruled the world some 445 million years ago, after the Ordovician mass extinction, a new study finds.
Fossilized bones riddled with enormous shark bite marks reveal the mega shark's main prey and why Megalodon went extinct.
The woolly mammoth, a cousin of today's elephants, died out about 10,000 years ago. It may be possible to bring them back by cloning, but should we?
The dinosaurs — the so-called tyrants of the Mesozoic era — weren't exactly thriving during their last few million years on Earth, a new study finds.
A new study finds that dodos weren't dumb. Their smarts were probably comparable to that of modern pigeons.
A big brain can be a liability instead of an asset for many mammals, finds new research that identifies a reversal of a 40-million-year-old trend.
The burnt eggshell fragments of an ancient giant bird have helped scientists solve a 50,000-year-old whodunit in Australia.