New technology helps search teams find people in wilderness

Eller was found next to a waterfall and survived for 17 days in the Maui forest by eating plants and drinking stream water. -

Yesenia D'Alessandro loaded a GPS tracking app on her cellphone and trudged into a remote Hawaii forest, joining more than 100 other volunteers looking for a missing hiker.

She climbed through muddy ravines, crossed streams and faced steep drop-offs in the thick tangle of trees and ferns where her college friend Amanda Eller vanished last month.