Sustainability

Can weed-seeking robots replace planet-killing herbicides?


This LED lamp charges your phone with salt water

How spinach helps produce electricity

Mitsubishi Outlander PHEV SUV goes plug-in hybrid

Artificial icebergs could turn ocean garbage patch into energy

Robot-run solar tracking could tilt power up, costs down


The Lexus 2013 CT 200h is a tricked-out luxury hybrid

Fuel cell vehicles need more infrastructure


This neighborhood is keeping pace with climate change

Hyundai’s fuel cell vehicle is almost ready to roll