Solar panels typically last 25 years, while shingles are good for 20. Waiting until you need to re-roof is usually the best course when going solar.

As a warming world creates an existential threat to the ski industry, resorts are reducing how much energy they need to make it snow.

New research finds that "beneficial" fires can cut the risk of high-intensity blazes by 64 per cent.

“Really inefficient engine technology is, pound for pound, more polluting than cars and trucks.”

Consumers bought a record number of electric vehicles in the second quarter of the year, but inventory is also accumulating on dealer lots.

Most intrusions have been innocuous, but a nefarious plot could bring down the grid. Experts have suggestions for improving security.