My husband and I have experienced a spate of “interesting” next-door neighbors over the last year. As a new set of neighbors recently moved in, I couldn’t help praying they’d turn out to be a nice, normal family—with a sense of volume control. Having grown up surrounded by such families, I appreciate the value of good neighbors.

Similarly, Earth needs good neighbors, too. The solar system’s occupants influence Earth’s ability to support life. Take the gas giant planets, for example. (more…)