Mars terraforming not possible using present-day technology

Science fiction writers have long featured terraforming, the process of creating an Earth-like or habitable environment on another planet, in their stories. Scientists themselves have proposed terraforming to enable the long-term ...

The environmental legacy of acid rain

For Stephen Norton, lakes hold a treasure trove of precious scientific information. For the past 40 years, Norton, professor emeritus at the University of Maine, has studied lakes by evaluating sediment cores from around ...

Cleaner air may be driving water quality in Chesapeake Bay

A new study suggests that improvements in air quality over the Potomac watershed, including the Washington, D.C., metro area, may be responsible for recent progress on water quality in the Chesapeake Bay. Scientists from ...

Humans adding less nitrogen to oceans than models predict

A new study finds that human activities are likely contributing far less nitrogen to the open ocean than many atmospheric models suggest. That's generally good news, but it also nullifies a potential side benefit to additional ...

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