Dieter Bohn The case against Juul is also partly a case against nicotine

There have been three lawsuits against Juul that cite nicotine’s health effects as part of their cases, which begged the question: how bad IS nicotine really? Our science reporter Rachel Becker dove deep into the case to find out.

In more science news, our resident space expert Loren Grush went to Mars! Well, it was more like an analog Mars habitat on a remote island in Hawaii that sits on the side of an active volcano, but same thing. Watch the episode premiere of Space Craft season 2 to see how astronauts train for grueling Mars missions, and be thankful you've got the whole weekend to chill.