Miriam Rossi, a professor of chemistry at Vassar College, offers the following reply: Snowflakes are symmetrical because they reflect the internal order of the water molecules as they arrange ...

Individual snowflakes have unique, intricate patterns, but the complicated way in which they fall appears to be universal. Normally, when an object falls to the ground it picks up speed until the ...

ARE these bubbles, bacteria or perhaps space rocks? No – they’re human tears as you’ve never seen them before. Each disc is a tear droplet that has been pipetted onto a glass slide, allowed to ...