On average, more than 13,000 animals come into Bradshaw Animal Shelter in Sacramento each year. During our Comstock’s photo ...

Nichole Baxter, 36, didn’t just find her calling — she practically declared it in middle school. “I was the kid who talked to everyone,” she says. “Moving my seat never made me any quieter.” That ...

Consider humans. They get sick and spread disease between each other, and usually take action only after symptoms show up. Last November, five undergrad friends at Caltech wondered: What other ...