Tadpoles swarm a drowned sparrow fledgling in this arresting image from Málaga, Spain. Tadpoles are omnivorous, making this meal one for the ages.
If every step taken, hour slept, and heartbeat can be measured, recorded, and analyzed, are we taking control of our health or losing the plot entirely?
"I've known many of them for their entire lives. And now I'm watching them kill each other," says one researcher.
Turns out there might be a very understandable reason why your cat leaves its bowl half-empty.
Googly eyes are apparently one of a gull's biggest fears.
The hectocotylus is both a reproductive and sensory organ, Harvard scientists and others have found.
Unlike most bugs, snow flies thrive in the cold—thanks to a baffling mix of genetic kinks that scientists never expected to find.
Photo: Juan Jesús Gonzalez Ahumada / Wildlife Photographer of the Year 
