The science pros at TKOR create and detonate an exploding hot chocolate bomb.

PHILADELPHIA (WPVI) -- Everyone knows it's cold it is outside. The entire Philadelphia region has remained below freezing for the seventh day in a row, with little relief in sight. But we are tapping ...

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A ceremony in Titusville, Florida, honored the 17 astronauts lost in NASA's Apollo 1, Challenger and Columbia tragedies. The Challenger shuttle exploded 73 seconds after its January 1986 launch, ...

Add Yahoo as a preferred source to see more of our stories on Google. Smoke billows in the sky above the Kennedy Space Center in Florida after the explosion of the Space Shuttle Challenger on Jan. 28, ...

New York and New Jersey were put under an extreme cold warning on Saturday amid subzero wind chills and an arctic cold front. The extreme cold warning is set to be in effect from 1 p.m. Saturday ...

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