Across the country, companies have been installing giant batteries that help them use more wind and solar power. That’s about to get much harder.

© Ross D. Franklin/Associated Press

Trump says one thing about toxins and does another.

A new report illustrates a concerning dynamic: Record heat last year pushed countries to use more planet-warming fossil fuels to cool things down.

Harold Hamm, Trump’s energy mentor, wants to take us back to the 1990s.

Gene banks are like a survivalist cache: our nation’s safeguard against all future challenges to growing the food we need.

We’re unplugging the monitors of the Earth’s vital signs.