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Liberals are reclaiming a climate action term once used by centrists -- and giving it a progressive twist.
Rapid collapse of Antarctic glaciers could flood coastal cities by the end of this century.
Two tense weeks of negotiations lead to an agreement that could lead to cleaner international trade.
The pile of failed carbon-tax proposals keeps growing. But that's not necessarily a bad thing.
There's something wrong with every source of energy. How do our nuclear nightmares compare?
Under the new interpretation, the Migratory Bird Treaty Act forbids only intentional killing -- such as hunting or killing birds to get their feathers -- without a permit.
The real action is -- and always has been -- at the local and state level.
The environmental sciences lack diversity — and that leaves holes in our understanding of health.
Sheldon Whitehouse talks protecting our oceans, questioning Scott Pruitt, and forcing his party to rally around fighting warming