Supporters of the pipeline need 67 votes to override a presidential veto — as of Tuesday they have only 63.
Coming six years after the biggest coal ash accident in US history, the new regulations treat waste from coal-fired power plants as non-hazardous, despite containing mercury, arsenic, and cadmium.
Worker productivity declines as temperatures rise, meaning US economic growth could slow, costing billions — or even trillions — of dollars.
Several countries are transporting water and other aid to the Indian Ocean nation, but climate change could prove to be its greatest long-term challenge.
The Republican Party has long been home to the most ardent climate change deniers, but some members say its time to support regulations to cut greenhouse gas emissions and promote clean energy.
As Arctic sea ice extent declines due to climate change, the polar bears are having trouble finding food to eat.
The Scandinavian nation could be a model for the US, which lags far behind Denmark in promoting renewables like wind and solar, even though the price of producing them has fallen dramatically.
The US Department of Justice and the Environmental Protection Agency hit Hyundai and Kia with a $350 million fine on Monday for underestimating the amount of greenhouse gases their vehicles emit.
Conventional wisdom in politics has long said talking about the environment and climate change was a recipe for defeat, but Michigan US Senate candidate Gary Peters might represent a new green vanguard.
The National Oceanic and Atmospheric Administration says last month was the warmest September on record and the past twelve months have been the hottest ever recorded.