The genomes of salamanders are bloated with genetic “parasites.” That extra DNA slows down their lives and strands them in perpetual childhood.
Long-necked plesiosaurs were thought to be slow swimmers. But new research suggests the animals’ large size helped them overcome water resistance.
Watch Your Head
High school girls and those with a history of concussions appear to take longest to recover.
The tiny pumpkin toadlet tumbles when it jumps. Its ear canals may be too tiny to help the animal track its motion through the air.