The aerial acrobat is less than half a millimeter long.
The findings could suggest it's possible to learn simple information while snoozing.
The kunga, a highly sought-after technological advance in Mesopotamia, may be the oldest known hybrid animal bred by humans.
As the ancestors of penguins dived deeper, their wings became streamlined for swimming.
Super-slender buildings can make scary noises as they sway, but acoustical consultants say they have solutions.
The findings suggest current theories of how some volcanoes form may be too simple.

Coverage of the Coronavirus Pandemic