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From health care to climate change to immigration, GOP presidential candidate Newt Gingrich has found himself at odds with conservatives over the years. But will Republican voters overlook those issues if they think he can beat President Obama?

The Oak Fire last year threatened the Southern Sierra Miwuk Nation's way of life. Now the tribe is restoring ancient heritage sites and cultural practices in collaboration with local agencies.

The Doomsday Clock now stands at 89 seconds to midnight, the closest to catastrophe in its nearly eight-decade history. Here's a look at how — and why — it's moved.

The Energy Star program has saved Americans more than a half-trillion dollars in energy costs and has reduced climate pollution. Now the Trump administration wants to eliminate or privatize it.

Media Lab participant, Davien Landrau, interviews Nicholas Day, author of "A World Without Summer" and "The Mona Lisa Vanishes."

Two authors argue that teachers should embrace controversial issues to help students learn the political process. But, they say, context is key.

From 100,000 cases a day in September, India is now down to about 10,000 a day. Is it climate? Demographics? Mask mandates? Scientists are looking for answers.

The northernmost reaches of Somerset County in Maine could become one of the last strongholds of syrup production in New England.

Drought conditions exacerbated by climate change is forcing tough choices for the water-starved regions of southwest Colorado, where farmers count on irrigated lands for farming and industry.

A 30-year, nationwide study of ecological changes — including the effects of climate warming — has been releasing a powerful greenhouse gas, and critics want it to stop.