Development can have negative effects on streams in urban and suburban areas. As a watershed becomes covered with pavement, sidewalks, and other types of urban land cover, stream organisms are confronted with an increased volume of storm water runoff, increased exposure to fertilizers and pesticides, and dramatic changes in physical living spaces within the stream itself. In this episode, USGS...

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Use this article and its accompanying material to explain ecosystems and human impact! It is available in English and Spanish.

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This video discusses that how in many places around the world, bedbug infestations have been on the rise. But for some reason, the pesky insects don't seem to spread disease.

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This documentary presents how recent changes in the composition and quantities of African dust transported to the Caribbean and the Americas might provide clues to why Caribbean coral reef ecosystems are deteriorating and human health may be impacted.

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Many molecules are chiral, which means they have two possible forms that are non-superimposable mirror images of each other, just like your left and right hand. But in the amino acids and sugars that make up living things, we find only one of these forms -- and young chemist Abigail Hubbard wants to know why. She's keen to pick Jack Szostak's brain on the source of this 'homochirality', a subject...

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