For most of us, fog is a nuisance. It makes driving difficult and it tends to dampen the mood of the day. But Dr. Daniel Fernandez at Cal State Monterey Bay has been working with fog for nearly 20 years, using nets to collect tiny fog water droplets on murky, breezy days. The fog nets are one-square meter of mesh-mounted vertically on poles in regions that are prime for fog. … In a typical day, one of these fog nets can capture about a half-gallon of water. On an exceptionally foggy, breezy day, Fernandez has captured close to 10 gallons.