How Sunscreens Work and Which One Should YOU Choose?

Sunscreen comes in many forms, each with its own impacts on your body and the environment. With so many options, how do you choose which sunscreen is best for you? To answer that question, Mary Poffenroth explains how sunscreens work and compares different application methods, SPFs, and active ingredients to help you make the best […]

Now That’s What I Call A Dotty Professor [Video]

Walter Lewin is a retired MIT physics professor with a doctorate in nuclear physics and a noted expert in using X-ray detection for astrophysics. He’s received honors from Nasa and a Guggenheim Fellowship, including recognition for his bringing science to a mass audience through online videos. But none of that is as impressive as his ability to […]