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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.

When a Norfolk Southern train derailed in Ohio nearly a year ago, authorities conducted a controlled burn of thousands of pounds of vinyl chloride. We look at the public health response.

Why are some Americans growing less convinced that electric vehicles are better for the planet than gasoline? There's lots of evidence that they're indeed better for the planet.

This past summer in the Arctic was the warmest since 1900, leading to early snowmelt and diminished sea ice.

Tourism is important to the Spanish economy but critics are arguing the country is too reliant on it.

For state politicians in Minnesota, Arbor Day celebrations mean taking a break from politics to engage in a nonpartisan activity — tree planting.