Out of hemp's many promising uses, one of the best could be in construction

“Hempcrete,” made from the woody core of hemp, is showing promise as an environmentally friendly building material. Read More

6 inexpensive things cities can do to become more sustainable

Comprehensive plans are great, but small, low-budget changes can make a big difference, too. Read More

How the U.S. power grid is evolving to handle solar and wind

As renewable energy sources move mainstream, electricity generation and distribution systems are getting an extreme makeover. Read More

With no upfront costs, this innovative financing tool makes energy efficiency affordable to all

By rolling upgrade costs into monthly bills, utilities are helping customers save energy and money at the same time Read More

What will happen to solar panels after their useful lives are over?

It's a good sign that solar energy use is growing, but the infrastructure to sunset these cells barely exists. Read More

The race is on to cut concrete's hefty carbon footprint

Bit by bit, innovators are chipping away at this ubiquitous material’s environmental downsides. Read More

The future of freight: More shipping, less emissions?

With 47,000 ships and 3 million trucks transporting goods around the world, opportunities to reduce our impact abound. Read More

What the "cold economy" means for a warming world

How we meet the world’s demand to keep things cool has major implications for the entire planet. New engines and heat pumps are one step in the right direction. Read More

How citizens have become sensors

Can and should citizens -- actively or passively -- collect data for city improvements?  Read More