But what if you could bypass it altogether? That’s what Ann Makosinski of Canada has done with her Hollow Flashlight, which won the 15-16 age group category of the Google Science Fair on Monday.

A hollow flashlight powered by the heat from a user's hand, designed by a 15-year-old girl from Victoria, has been picked for the finals of the Google Science Fair. Ann Makosinski, a Grade 10 ...

15-year-old Canadian girl invents flashlight powered only by body heat and earns spot in Google Science Fair finals By ASHLEY COLLMAN Published: 23:54 EDT, 29 June 2013 | Updated: 07:52 EDT, 30 ...