Short Wave Folgen

In 2006, while hiking around the Root Glacier in Alaska, glaciologist Tim Bartholomaus encountered something strange and unexpected on the ice — dozens of fuzzy, green balls of moss. It turns out, other glaciologists had come across before and lovingly named them "glacier mice."Learn more about sponsor message choices: podcastchoices.com/adchoicesNPR Privacy Policy

In San Francisco, the coronavirus has disproportionately affected Hispanic and Latinx communities. This is especially true in the Mission District — a neighborhood known for its art and food culture. To understand more about how the virus has penetrated the neighborhood, a group of collaborators known as Unidos En Salud carried out a massive testing initiative focused on community and collaboration. Follow Maddie on Twitter for more coronavirus coverage. Her Twitter handle is @maddie_sofia. Email the show at shortwave@npr.org.Learn more about sponsor message choices: podcastchoices.com/adchoicesNPR Privacy Policy

Encore episode. Helium is the second-most common element in the cosmos, but it's far rarer on planet Earth. As part of our celebration of the periodic table's 150th birthday, correspondent Geoff Brumfiel shares a brief history of helium's ascent, to become a crucial part of rocket ships, MRI machines, and birthday parties. Read more of Geoff's reporting on helium here.Email the show at shortwave@npr.org.Learn more about sponsor message choices: podcastchoices.com/adchoicesNPR Privacy Policy