Solar-powered balloons detect mysterious sounds in the stratosphere
Imagine if sending your science experiment 70,000 ft in the air just took painter's plastic, tape, a dash of charcoal dust, and plenty of sunlight. Daniel Bowman of Sandia National Laboratories will present his findings using solar-powered hot air balloons to eavesdrop on stratospheric sounds at the upcoming 184th Meeting of the Acoustical Society of America, running May 8-12 at the Chicag