How to defend Earth against an asteroid apocalypse, what mask you should wear to the gym, and more.

Vivian Le's reads

How to defend Earth against an asteroid apocalypse. Many disasters, such as volcanic eruptions, earthquakes, and hurricanes, are largely unavoidable, but there is one that many scientists hope that we'll be able to prevent: an asteroid or comet colliding with Earth. Writing for Vox, Brian Resnick explains how scientists are trying to develop a planetary defense system to stop an asteroid collision before it happens.

Are medieval sleeping habits actually better? In medieval Europe, people had two sleeping phases during the night instead of one, long continuous phase. This "segmented sleep" has been recommended as a way to combat insomnia and nighttime restlessness—but is it actually better than the longer sleep most people are getting now? Writing for The Atlantic, Derek Thompson explores the history of segmented sleep and whether it actually leads to better quality rest.

Alyssa Nystrom's reads

How alcohol disrupts your sleep cycle. Many people turn to alcohol to help them relax or fall asleep at night—but experts warn that excessive amounts can lead to a vicious cycle of fragmented sleep and even heavier drinking. Writing for the New York Times, Amelia Nierenberg explains how alcohol interferes with your sleep cycle.

What mask should you wear to the gym? As mask mandates return to many gyms, gym goers are once again faced with the dilemma of whether to wear a more protective N95 or KN95 mask or a more comfortable fabric mask. Writing for the Washington Post, Marlene Cimons explains the pros and cons of wearing different types of masks during your workout.