We've all heard it a zillion times: don't pee in the pool. But why?
Urine contains uric acid, which, when in contact with chlorine, creates cyanogen chloride and trichloramine. These chemicals are bad for your lungs and can cause irritation, especially in indoor pools. So, for the greater good of us all, only pee where other living things pee (ocean: check, forest: check, etc.)!
How flying generators work: the kite flies in a circle, off nothing more than lift and wind, and uses that motion to push air over its propellers, which in turn generate electricity. The energy is then transmitted down a tether attached to a landing station, dubbed the "spar buoy." Makani claims that the system generates more energy than conventional turbines and costs less to build.