On this week's show: A standoff over radioactive waste could slash the global supply of rare earth elements, and historians discover how key plant and animal specimens arrived in Europe via slavers' ships
On this week's show: A wave of horse injuries and deaths on a famed racetrack has stumped scientists, and researchers are looking into the impact of jailing—and bailing—people before trial
Creatures that look like pancakes or worms with horseshoe heads have been frozen in rock for half a billion years. Now their fossils are protected in a park
On this week's show: A new radio telescope promises to help sort out the more than 40 theories for the origins of fast radio bursts and researchers tackle the long-term health effects of pediatric cancer treatment