TERRE HAUTE, Ind. (AP) _ Students at Rose-Hulman Institute of Technology have developed a device designed to use solar energy to purify drinking water in Kenya.
 
  The Tribune-Star reports the device uses solar energy to heat water that has been filtered through sand and pea gravel to 158 degrees. That kills bacteria.
 
  Student project manager Phillip Markison says the device can purify 15 liters of water a day and is designed for a family of five.
 
  The device is part of a design-build-communicate course focused on the National Academy of Engineering's Grand Challenges. This challenge called for students to put solar energy to work economically. 
 
  Rose-Hulman students plan to contact their peers at Egerton University in Kenya so they can take the device to their tribes.