It rained marshmallows at a Detroit-area park as children raced to collect thousands of the fluffy treats dropped from a helicopter.

In a new study, researchers in Singapore describe a way to turn falling water into electricity using nothing more than droplets, a narrow plastic tube, and a surprising flow pattern called “plug flow.

Discover fun printable summer crafts for kids! Keep kids screen-free with just a printer, paper, and simple craft supplies.