How window-mounted heat pumps can give tenants efficient heating and cooling

The climate friendly city is a bullseye

Urban planners have been asking the wrong question. It's not how dense a city is—it's how close. The sweet spot for shorter commutes and lower emissions, for many cities, forms a ring.

How will Australian native bees cope with climate change? Their nests hold a clue

Surprisingly, the species that are the most tolerant to heat, are also the most vulnerable to future warming.

Is New England’s new hydropower transmission line paying off?

The flow has been stop and go for the first few months, but the line shows plenty of potential to boost Massachusetts’ renewable energy supply.

Your AI habit is wasting precious resources. Here’s how to use it responsibly

We know not to leave lights on all day. We also know not to run an air conditioner with windows open. We need a similar mindset for AI.

Inside the government’s push to divert Puerto Rico solar funds to a bankrupt utility

Why the heat index matters more than just the temperature

The number on the thermometer only tells half the story. Here’s what to know about heat index—and why some scientists are rethinking how it is calculated.