yalescientific.org

xVRb1 TIL In certain circumstances, hot water can freeze faster than cold water. This phenomenon was first observed by a 16-year old boy and has been named after him: the Mpemba effect.
jNYbX TIL that the red-eye effect in pictures is literally blood in our eyes. If a picture is taken when our pupils are dilated, they don't have enough time to constrict and the light reflects off the blood in the back of our eyes.
Y5Yv TIL a sugar rush is a placebo effect. Sugar doesn’t cause hyperactivity