A Less Hardy Hardiness Map The USDA has unveiled a new version of its plant hardiness map, which gardeners use to gauge which plants will survive in which climate zone. (Check your nearest seed packet.) In the newest iteration, many zones have shifted northward because winters aren’t as cold as they were 22 years ago […]
It’s been a really active time for the Earth Observatory and volcanoes. In the past three weeks, we’ve posted images of a night-time eruption of Shiveluch, ongoing activity at Puyehue–Cordón Caulle, daytime activity at the Kizimen Volcano, and my own favorite, a brand new island in the Red Sea. And those are just the images […]
The new feature story, Seeing Forests for the Trees and the Carbon, discusses the need to form a three-dimensional picture of the world’s forests. Such a three-dimensional picture includes tree canopy height (below). Although canopy height in the Amazon Rainforest doesn’t match those of the Pacific Northwest or Southeast Asia, it still far exceeds the […]
On January 11, 2012, Google celebrated the 374th birthday of geology pioneer, Nicolaus Steno, with a special Google Doodle. Steno was a 17th-century anatomist and pioneering geologist. After dissecting a shark head, he realized that “tongue stones” — believed to belong to snakes turned to stone — were actually shark teeth. In Steno’s era, […]
For a month in the fall of 2011, NASA staff conducted an experiment of a different kind. They shared satellite images and maps with Chicagoans, but not in a classroom or a museum. The images of Earth were posted at malls, at bus and train stations, in O’Hare Airport, and on roadside billboards. The experimental question […]
