Why, during the first month of the current Congress, did nearly half the Senate — all Republicans — vote against an amendment stating that human activities contribute significantly to climate change?

The political and economic future of the remaining casinos, those still working there and the city itself hang precariously in the balance.

Instead of wallowing in nostalgia for coal mining, the GOP presidential candidate should be betting on renewable energy futures.

Or are they making too much of former Interior Secretary Ken Salazar's overtures to oil and gas producers?

Climate disruption is inextricably linked to economic inequality. Serious climate solutions must be, too.

Instead of lamenting our divisions, let’s celebrate what we agree on and find candidates willing to address what's blocking cooperation.

Both parties are unwilling or unable to pinpoint what ails America and the world.

Climate denial is having a real impact on the lives of those living in the Arctic.

Do we miss anything by tuning out horserace-style election coverage?

During a hot week in Philadelphia, backers of Bernie Sanders and progressive allies try to build a movement that will outlast the Vermont senator's campaign.