Next-generation sodium-iron chemistries are moving toward gigawatt-scale production. Here is what falling storage costs mean for grids, households and night-time solar.
A decade after the first saplings went in, continuous canopy corridors in the fictional Valle Verde reserve are reconnecting native wildlife without pushing out the people who live there.
Solar-powered offline mesh networks are bringing modular robotics and programming labs to remote schools. Teachers say the real breakthrough is the training, not the hardware.