Brad Plumer

Virtually all of the increase in global fish production since the 1990s has come from fish farms.

It’s very rare, but it can be horrific when it happens.

Obama’s rule on mercury pollution is one of his biggest environmental moves so far. SCOTUS is now debating its fate.

It’s a great story. But it’ll be difficult for other countries to do.

This could have big effects on everything from fisheries to sea-level rise to weather in Europe.

These are the first new federal standards on fracking in more than 30 years.

As the world heats up, the Arctic’s vast expanse of floating sea ice keeps shrinking.

Water is underpriced and hard to change. Changing that could increase incentives for conservation.