A new study finds that fish may get pleasure from being cleaned by other fish -- perhaps like the experience of getting a massage.

Phytoplankton are tiny ocean organisms that naturally sequester carbon, like plants on land.

Health departments struggle to adequately survey for ticks to warn doctors about new species and the diseases they carry.

The fires have ravaged small, sparsely populated towns in the country's northwest, forcing locals in many cases to act as firefighters. About 2,382 square miles have burned across Spain and Portugal.

A lot of companies want the EPA in charge of setting national climate regulations because it helps shield them from lawsuits and creates a predictable environment in which to make investments.

Hurricane Erin is not set to make landfall this week, but will likely cause heavy rainfall, flooding and life-threatening rip currents along the U.S. east coast this week.

Critics argue that they strain water and energy resources, which will hinder the state from reaching its climate goals.

Scientists say that the water in Boston Harbor is getting cleaner, leading to an increase in the number of sand tiger sharks using the area as a nursery habitat.

In small town Washington — where hydropower is plentiful — data centers are creating jobs and funding amenities. But water and energy aren't unlimited — and some worry about long-term sustainability.

Giant dams built to conserve the Colorado River have nearly wiped out nearby native cottonwood trees, causing big ecosystem disruption. Tiny dams built to mimic those built by beavers could bring them back.