Male valerian plants growing at 3,790 meters (12,434 feet). These males have moved to higher elevations in response to hotter, drier weather. That has caused the ratio of males to females to climb over the last 40 years.
What would happen if you jumped into a hole through the center of the Earth? You might not reach the other side, a new study contends.
The orbit of 2016 HO3 (yellow) keeps it close to Earth. From our vantage point, it appears as though this asteroid orbits Earth. It actually orbits the sun.
Here’s a Cool Job: writing about science. Two people who regularly do that for SNS have just picked up awards for stories on the physics of lightning and how nature recycles the dead to feed the living.