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The massive tornado that struck Oklahoma this week was the product of specific atmospheric conditions—and bad luck.
Severe weather in the south central U.S. this week spawned a string of tornadoes that killed at least 50 people. We'll talk about the tornado outbreak and the conditions needed for tornado formation.
The average warning time for a tornado is about 15 minutes. But is that enough time to get your family out of harm's way? In this segment, a look at twisters -- and how the scientists chasing them could help us get better warnings.
Budget cuts may impair NOAA’s ability to monitor severe weather, such as tornadoes and blizzards.
In this segment, we'll take a look at the weird winter weather around the country. Some pundits attribute it to global warming - but is it?
Much-maligned moths are more than the butterfly’s drab cousin.
Hawk moths feed like hummingbirds. Ty Hedrick wants to know how they hold steady...
Can woolly bear caterpillars predict winter weather?
Several newly-discovered species of caterpillar in Hawaii function equally well ...
A virus known as baculovirus sends caterpillar climbing for the treetops.
\tLegend holds that the length of a woolly bear caterpillar’s color bands can be used to forecast how severe the winter weather will be. The myth dates back to colonial American folklore but was popularized by a 1948 study. SciFri finds out if there’s any truth to the lore, and what the caterpillar’s fuzzy bristles are really used for.