sitn.hms.harvard.edu

oRkWA TIL the International Space Station has gravity and everything is weightless only because they are in a constant free-fall around Earth
KY9dw TIL That a Mexican salamander, the Axolotl, has an amazing regenerative ability. They can regenerate entire limbs, or even inner organs, such as parts of their brain, spinal cord or heart. New science is studying this ability to maybe help people who has suffered limb loss in the future.
rNKme TIL that grandma killer whales increase the survival of the pack by letting their daughters mate while taking care of their grandoffspring