Walking through doorways causes forgetting: According to a new study, walking through a doorway helps your brain forget what you were about to do.

“Entering or exiting through a doorway serves as an ‘event boundary’ in the mind, which separates episodes of activity and files them away,” Radvansky explains.

-Read more about it right here.

A new material announced recently emits infrared light for up to two weeks–after charging for only one minute. Because the human eye can’t detect infrared light, the glow is visible only through night vision goggles; application plans so far include using it as a sort of flashlight in combat or recon situations where shining visible light is a bad idea.

The glow-in-the-dark material is easily mixed into water and other liquids, which makes it versatile and easy to use. The photo above is a a 4-second exposure shot using a night vision monocula; it was taken in full dark. Notice the glowing logo, where the material was mixed into paint. Read more about it here.

How does a hummingbird dry off? By shaking its head–at 34g. (For comparison, a Formula I racecar reaches a g-force of less than 6.) The whole process takes about one-tenth of a second, which has been caught in action and revealed in slo-mo for us:

(Footage: University of California, Berkeley)