Greenhouse gases emitted today will cause sea level to rise for centuries to come. Each degree of global warming is likely to raise sea level by more than 6.5 feet in the future, a study now published in the Proceedings of the National Academy of Sciences shows.
JULY 15, 2013: In the summer of 1989, a robotic emissary from Earth visited the farthest major planet from the Sun, Neptune. Like any good tourist, NASA's Voyager 2 spacecraft snapped a lot of pictures during the brief flyby.
It is not unusual for swarms of small earthquakes to precede a volcanic eruption. They can reach a point of such rapid succession that they create a signal called harmonic tremor that resembles sound made by various types of musical instruments, though at frequencies much lower than humans can hear.
In a world crawling with insects, those billions of tiny bodies fall into just 30 major descriptive groups, known as orders. That’s why Derek Sikes, curator of insects at the University of Alaska Museum of the North, was disappointed with a graduate student when she failed to identify a creature that was wandering her plots […]