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Fifty thousand years ago, North America's landscapes were alive with an astonishing array of enormous creatures. Massive ...
Scientists identify the oldest flying reptile in North America, discovered in Arizona and dating back 209 million years.
Animalia 75 percent of North America’s bird species are in decline, study says. Birds are rapidly vanishing from North America, with dramatic population losses in places that were once thought safe.
Fifty thousand years ago, North America's landscapes were alive with an astonishing array of enormous creatures. Massive woolly mammoths roamed vast icy plains, while dense forests echoed with the ...