Countries are turning back to less expensive but carbon-heavy coal because of rising energy costs and Russia’s war in Ukraine.

The price of coal has risen due to a surge in global demand. Still, signs point toward a continued decline for the U.S. coal sector.

Traditionally, when coal prices spike, many plants switch to natural gas. But with natural gas prices at record highs too, some power providers are at a loss.

In a new book, “Confronting Climate Gridlock,” Rice University’s Daniel Cohan says technological innovation is only one piece of the puzzle.

Energy investors have profited as prices climbed. But companies hesitate to boost production, even though costs weigh on consumers.

The coal industry’s decline over the last decade has made scaling up tough, even as prices surge.

The climate crisis has made it a necessity.

Between a quarter and a third of U.S. households are said to be energy insecure, and many don’t qualify for aid.

Some say lawmakers are trying to solve 21st century problems with 20th century solutions.

The war in Ukraine is forcing the U.S. to reconsider its dependence on oil.