One year later, the shade balls in the Los Angeles Reservoir have been deemed a success by the L.A. Department of Water and Power. Follow BI Video: On Twitter More from Science One year later ...

During LA's recent drought crisis, the city decided to use a very unconventional method to help conserve water — shade balls. Here is how they work. Follow BI Video: On Twitter More from Science ...

If you've seen a video about California reservoirs or even visited one, you might have glimpsed a layer of black balls floating on the surface; these balls, made from high-density polyethylene ...