Description
Inside this issue:
- The Asteroid Hunters: Meet the astronomers with an eye on the end of the world. By Tom Vanderbilt
- The Enlightening Beauty of an Einstein Ring. What a trippy gravitational phenomenon can tell us about the universe. By Brian Gallagher
- The Groundhog Watchers Meet Susan and Joe. Their daily observations of the groundhogs in their yard are making science history. By Brandon Keim
- Who Controls Your Thoughts? Our minds are being coerced in covert ways. By Katherine Harmon Courage