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Oregon wants to reduce carbon emissions by adopting a cap-and-trade system, which would raise the cost of fossil fuels. But critics complain that the idea is poorly conceived.

A letter from over 200 scientists to the World Health Organization asks for further investigation into how the virus spreads. WHO responded at a press conference on Tuesday.

There's new concern that the growing cannabis industry may be contributing to air pollution. But it's a tricky thing to study, since pot is still illegal under federal law.

Synthetic chemicals have been found in Colorado water supplies. The Pentagon is examining hundreds of military sites for possible contamination by PFCs, which have been linked to health problems.

What happens when you get a bunch of teenagers in a room, feed them pizza and talk about art? As you might expect, they all have different ideas, but eclecticism and imagination have come together for “In Living Color" at University Galleries.

The South American country of Chile has become a center of lithium mining, which has boomed as demand for electric car batteries has risen. But what are the environmental costs?

For decades, the lemon-lime drink has come in green bottles — but clear plastic is more easily recycled, the company says. Environmentalists say the issue is not the color but the single-use plastic.

Both U.S. Senate candidates from Pennsylvania, Mehmet Oz and John Fetterman, have changed their positions on fracking, and say they now support it — despite climate change concerns.

The anti-pollution ad debuted in 1971 and showed a man in Native American attire shed a single tear at the sight of pollution over a once unblemished landscape.

While some cities don't like the way the native plants look, others are encouraging the climate-friendly swap.