energy efficiency | Boing Boing

cryptomining How to heat your chickens (and your home) with Bitcoin Thom Dunn
floatovoltaics Floatovoltaics are a cool way to super-charge your solar panels with water Thom Dunn
warmth Something to keep you warm when it's nippy out Maggie Koerth
rebound effect Paved with good intentions: When energy efficiency backfires Maggie Koerth