The heat is on
A technology to harness solar heat for electricity shows promise, but is clouded over by low efficiency.
Flush with treasures
Technological fixes to broken sewage treatment systems are ensuring that waste and money don't go straight down the drain.
Technologies to cool the world
Scientists are working on technologies to bring down temperatures — of places and people — sustainably.
Materials that cool sustainably
The hunt is on for materials that can bring temperatures down without using power.
The sun shines on solar farming
Agrivoltaic set-ups are helping farmers harvest higher revenues and yielding other benefits, too.
