Science Mar 16 Scientists have discovered 4.2 billion-year-old remnants of the Earth’s first crust By Andrew Wagner
Aug 06 Watch Hellbender Salamander Returning to Its Rock Underwater footage of a hellbender salamander returning to its rock.
Science Dec 05 Rocks on Mars Shed New Light on Planet’s Ancient Climate Cycles In the stratified layers of a rocky Martian outcrop, researchers have found evidence of ancient climate cycles similar to the ones that caused Earth's ice ages. By PBS News Hour
Nation Mar 13 Watch Essayist Considers the Power of War Photography NewsHour Essayist Roger Rosenblatt reflects on the power of a single war photo - this one of a Palestinian boy from Monday's New York Times front page.