Giant freshwater crayfish, longer and bulkier than today's species, roamed New Zealand 20 million years ago. They would have ...

They’re barely noticeable. But they extend 6 feet into the ground, and are home to Wisconsin’s rarest crayfish species, the prairie crayfish. Helen Holtz, an ecologist with the Waukesha County Land ...

Water isn’t just a resource for Bob McNamara. It’s life itself. “You don’t know until it’s gone how important it is.” ...

The Center for Biological Diversity notified the Trump administration today that it intends to sue over the U.S. Fish and ...

WELLINGTON: Giant freshwater crayfish, up to 25cm long, once roamed New Zealand's ancient lakes around 20 million years ago, ...