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Florida fossil porcupine solves a prickly dilemma 10 million years in the making

There s a longstanding debate simmering among biologists who study porcupines. There are 16 porcupine species in Central and South America, but only one in the United States and Canada. DNA evidence suggests North America s sole porcupine belongs to a group that originated 10 million years ago, but fossils seem to tell a different story. Some paleontologists think they may have evolved just 2.5 million years ago, at the beginning of the ice ages.

Human activity is making it harder for scientists to interpret oceans' past

These plants evolved in Florida millions of years ago. They may be gone in decades.

Where Did Butterflies Come From? This Scientist Is On the Case | Science

Akito Kawahara has spent his life devoted to lepidoptera. Now he’s correcting the record on where they first evolved

Fossil study shows frogs were Florida's first-known vertebrates from the Caribbean