featured segment
One Hundred Years of General Relativity
Albert Einstein published his theory of general relativity on December 2, 1915.
34:25
Orchids, Snails, And Wolves: The Ongoing Benefit Of The Endangered Species Act
The Endangered Species Act established protections for plant and animal species at risk of extinction. It’s still working 50 years later.
22:06
One Hundred Years of General Relativity
Albert Einstein published his theory of general relativity on December 2, 1915.
9:03
Dawn Arrives at Ceres
Mission director and chief engineer Marc Rayman gives an update on the Dawn mission, scheduled to arrive in orbit around dwarf planet Ceres this week.
14:31
Avoid the Doctor—For Your Health
How much medical care is too much medical care?
17:27
The Interstellar Tourist’s Guide to Exoplanets
Exoplanet hunter Sara Seager explains how biosignature gases could help identify life on exoplanets, and The Takeaway’s John Hockenberry takes Ira on a futuristic tour of exoplanet vacation destinations.
12:08
Fossil Jaw Turns Back Clock on Human Evolution
A newly discovered fossil jaw pushes the date of Homo’s evolution back to 2.8 million years ago.
15:39
Balancing Surveillance: Privacy and Security in the Digital Age
Is it possible to keep our personal information secure in the digital age?
0:39
Mysteries of the Mars Plume
Wayne Jaeschke, a patent attorney and amateur astronomer, captured a photo of a wispy cloud rising 120 miles into the Martian atmosphere.