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Last updated on April 24, 2014 at 21:24 EDT

Latest Steven M. Reppert Stories

Monarch Butterflies Won't Migrate North Unless They Can Chill Out First In Mexico
2013-02-22 10:09:45

April Flowers for redOrbit.com - Your Universe Online Millions of monarch butterflies from across the eastern U.S. begin a southward migration each fall to escape the frigid temperatures of the northern boundary of their range. They travel up to 2,000 miles to reach an overwintering site in a very specific grove of fir trees in central Mexico. A new study from the University of Massachusetts Medical School (UMass) suggests the butterflies require the exposure to coldness in the...

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2009-09-25 06:25:00

After years of theorizing about how Monarch butterflies find their way to Mexico for the winter, scientists have finally discovered that their antennas help them navigate the journey. Researchers confirmed the finding when they painted their antennas black and observed them losing their way. Butterflies have only the sun in the sky as a point of reference for direction, and since the sun is always moving, they have to constantly adjust in order to stay on the right path throughout the day....