Cambridge researchers have created a groundbreaking $10 optical sensor that delivers the precision of laboratory equipment in a device small enough for wearable technology. It identified foods, plastics, and medicines with 100% accuracy in tests and demonstrated the ability to monitor blood glucose, alcohol, and other health markers without invasive procedures.
Nearly 3,000 exploding stars challenge our understanding of the Universe
A massive analysis of 2,884 exploding stars has uncovered new evidence that dark energy, the mysterious force accelerating the universe’s expansion, may change over time. The findings challenge a cornerstone of modern cosmology and could reshape our understanding of how the universe works.
40 years later, Chernobyl's nuclear fallout is not what scientists expected
Forty years after the Chornobyl disaster, tiny radioactive particles still linger in the soil, carrying a dangerous legacy. Using powerful X-rays, scientists discovered that some of these particles have remained surprisingly stable, trapping radioactive substances inside instead of releasing them into the environment.
Scientists discover a hidden immune weapon against deadly lung cancer
Researchers have uncovered a hidden immune defense capable of attacking small cell lung cancer, an extremely aggressive disease that often escapes conventional treatments. The specialized immune cells can recognize and destroy cancer cells even when tumors have disguised themselves from the immune system.
Millions take fish oil for brain health. A two-year study found no benefit
A surprising two-year clinical trial found that fish oil supplements successfully delivered omega-3s to the brain but failed to improve memory or protect against Alzheimer's-related brain shrinkage. Researchers suspect that getting these nutrients through a healthy diet may offer benefits that supplements alone cannot provide.
Letters from an American
• Heather Cox Richardson
Politics Chat, October 22, 2026
In which I try to answer your questions about modern politics....
Letters from an American
• Heather Cox Richardson
Representative Joe Neguse | American Conversations
Letters from an American
• Heather Cox Richardson
Hallie Shoffner | American Conversations
Letters from an American
• Heather Cox Richardson
Seth Bodnar | American Conversations
Letters from an American
• Heather Cox Richardson
Abdul El-Sayed | American Conversations
Recorded October 21, 2026.
Letters from an American
• Heather Cox Richardson
Politics Chat, October 20, 2026
In which I try to answer your questions about modern politics....
Letters from an American
• Heather Cox Richardson
Chris Jones | American Conversations
Recorded October 20, 2026.
Letters from an American
• Heather Cox Richardson
What the Heck Just Happened? October 18, 2026
Letters from an American
• Heather Cox Richardson
Politics Chat, October 15, 2026
Listen on Apple Podcasts
Letters from an American
• Heather Cox Richardson
Brian Poindexter | American Conversations
Recorded October 13, 2026.
Letters from an American
• Heather Cox Richardson
Scott MacFarlane | American Conversations
Recorded October 7, 2026.
Letters from an American
• Heather Cox Richardson
Donald's Diesel Disaster | Lunch Money with Paul Krugman and Heather Cox Richardson
Recorded September 23, 2026.
Letters from an American
• Heather Cox Richardson
Politics Chat, October 22, 2026
Watch today’s live recording here.
David, 1956 #naïveart #chagall
Midnight was great. Love a musical that leaves you stunned at intermission, with no idea what to expect next. 🎭