A team led by Penn State
researchers has succeeded in building silicon fibers thinner than a human hair that can act as solar cells
. If the work scales up to produce longer fibers as well as the team thinks it could, these solar energy absorbing threads could be woven into clothing in the future. So if you've ever wanted a jacket that can pull in energy through the fibers it's made of and use it charge your phone
while you take a stroll in the park, take heart -- you might be getting it sooner than expected.