These fish yawn — and it’s contagious
Zebrafish are the first cold-blooded animals known to behave this way. Contagious yawning may affect other behaviors in these fish, too.
Zebrafish are the first cold-blooded animals known to behave this way. Contagious yawning may affect other behaviors in these fish, too.
Typically, weather enters an area, storms through, then leaves. Here's what happens when steamy summer air gets stalled.
It’s hard to believe a packet of dry yeast is full of living things. But feed the yeast the right things, and presto! You’ve got bubbly, oozing mess of life.
Sunlight's peak intensity is at a green wavelength. Here’s why it doesn’t appear that way to us.
Video shows narwhals using their tusks to prod — even flip — fish they don’t target as prey. It’s the first reported evidence of these whales playing.