A study from Johns Hopkins researchers found that residents near or on the fence line of polluting enterprises are at higher risk for multiple health problems because of the toxic mix of air they breathe. The lead researcher explains the study. Also, astronomer Phil Plait wondered what it would be like to walk on Mars, fall into a black hole, or fly through a nebula, so he wrote a book, Under Alien Skies: A Sightseer’s Guide to the Universe. He reveals the strange colors of a sunset on Mars, what it’s like on a planet orbiting binary stars, the unique challenges of landing on an asteroid, and more. And a paper published in the journal Scientific Reports describes the case study of an orangutan who treated and healed his own wound. Zoologists have long seen behaviors of self-medicating in the animal kingdom, but until now it has rarely if ever been documented in scientific literature. — We rely on support from listeners like you to keep our journalism strong. You can donate at loe.org – any amount is appreciated! – and thank you for your support. Learn more about your ad choices. Visit megaphone.fm/adchoices