Aboard the International Space Station, astronauts cut their hair using a pair of electrical sheers connected to a vacuum. NASA astronaut Frank Rubio says, "It's not a pretty haircut, for sure." Getty Images hide caption

Matter and its weird, opposite antimatter annihilate each other "in a blaze of glory," says Jessica Esquivel, an experimental particle physicist at Fermilab. PeteDraper/Getty Images hide caption

It's Short Wave's 5th birthday! To celebrate, we answer our 5-year-old listeners' science questions. NickS/Getty Images hide caption

Artistic renditions of a future Mars settlement often feature structures above ground, as seen above. But after extensive research, authors Kelly and Zach Weinersmith found that any potential settlement would have to be below ground. janiecbros/Getty Images hide caption

Sauerkraut, kimchi, pickles — all of these delightful delicacies are made via fermentation, the transformation of one food into another with the help of microbes. Yulia Naumenko/Yulia Naumenko | Getty Images hide caption

In the United States, one in every four households experiences a power outage annually. Scientists at Oak Ridge National Laboratory are working on a set of drones connected to a "smart" electric grid to try to help change that. Ali Majdfar/Getty Images hide caption

This artistic illustration shows the gravitational waves that ripple out from two neutron stars colliding with each other. This collision also causes bursts of gamma rays to be shot out seconds after the gravitational waves. NSF/LIGO/Sonoma State University/A. Simonnet hide caption

The Turtle Conservancy cares for illegally trafficked turtles once they're confiscated, including box turtles. Nathanael Stanek/The Turtle Conservancy hide caption

Some scientists are searching for the origins of life on Earth by simulating prebiotic conditions at hydrothermal vents, like this "black smoker" in the Pacific Ocean. Ralph White/Getty Images hide caption