Fall migrations

This post contributed by Nadine Lymn, ESA Director of Public Affairs Now that mid-October has arrived, many of us notice the shortening days, dark mornings, and new chill in the air.  Thoughts turn to cozy indoor activities, hot beverages, and away from such outdoor hobbies such as gardening.  But while we have the luxury of moving many of our activities indoors during the upcoming winter chill, other species in North...

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9/11 dust study, gypsy-moth caterpillar killer, and hummingbird courtship

Studying the 9/11 WTC dust: Coinciding with the tenth anniversary of the September 11, 2001 terrorist attacks, the United States Geological Survey (USGS) recently published a blog highlighting the agency’s study of the environmental and potential health risks of the massive dust cloud that swept across New York City as a result of the collapse of the World Trade Center. The dust was particularly dense, coating outdoor surfaces in a...

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A battle of the sexes: Hummingbird competition and evolution

The intersection of evolution and ecology has risen to become a prominent subfield in both disciplines in recent years, with scientists exploring more and more how interactions among organisms can shape evolution at the population and even species level.  In the May issue of the journal Ecology, Ethan Temeles of Amherst College explores a fascinating relationship between the males and females of one species of hummingbird.  The long,...

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