< p>TROY, Mich. (AP) — Science experiments from two Michigan high school students and a young man from Egypt have been performed aboard the International Space Station.

Former science television personality Bill Nye hosted a live online video stream of the experiments on Thursday.

It marked the culmination of the YouTube Space Lab competition that challenged kids to design a science experiment to be conducted by astronauts 250 miles above Earth.

Dorothy Chen and Sara Ma were named winners in March in the 14- to 16-year-old age group. The Troy High School students' experiment asks the question: "Could alien superbugs cure disease on Earth?" Amr Mohamed from Egypt won the 17- to 18-year-old age group for an experiment about spiders.

YouTube, Lenovo and private space exploration company Space Adventures organized the competition.

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Online:

http://www.youtube.com/spacelab