Frogs have been around for nearly 200 million years, but it wasn't until a 10-mile-wide asteroid struck our planet, wiping out three-quarters of all life on Earth--including the dinosaurs--that these crafty amphibians were able to make their big evolutionary move, according to new research.
Frogs have been around for nearly 200 million years, but it wasn't until a 10-mile-wide asteroid struck our planet, wiping out three-quarters of all life on Earth--including the dinosaurs--that these crafty amphibians were able to make their big evolutionary move, according to new research.
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