Q: I got home from work last night and couldn’t wait to get into my pool to soak away the day, but when I got to the backyard, the pool water was green—not light green, either, but dark. I didn’t even ...

A family exploring in the Israeli desert stumbled across an old pool and decided to take a plunge, despite the color of the water. Simcha Sher, a 31-year-old native of Upstate New York who now lives ...