Talks among seven states on Colorado River water cutbacks have hit a wall. The Trump administration summoned governors to Washington, D.C., to try to get an agreement.

The waters of Boston Harbor are now clean enough that shellfish from its outer communities can be eaten without first running them through a purification plant.

Like living beyond your financial means, using more water than nature can replenish can have catastrophic results.

After looking at the X-rays, the rescue nonprofit realized "this was actually the second time he had narrowly escaped death."

An expedition off the coast of Massachusetts has confirmed the existence of a freshwater reservoir beneath the seafloor. Now, scientists are starting to understand when and how it formed.

A new study finds that warming temperatures are causing Antarctic penguins to breed earlier, threatening some species with extinction by century's end.