Because the Earth is doing the work of increasing the Moon's momentum, the Earth's rotation slows down in turn, as its momentum goes to the Moon. To put it another way, as the Moon's orbital momentum ...

Using lasers, researchers triggered optical illusion signals in mouse brains, uncovering how the brain fills in missing details in vision.

Earth’s radiation can send some molecules spinning or vibrating, which is what makes them greenhouse gases. This infographic explains how relatively few heat-trapping molecules can have a planetary ...

Everybody develops presbyopia as they age-a difficulty in focusing on near objects and text-and often have to resort to ...