New Bluetooth monitoring device tracks power usage and sends the stats to your smartphone

Neil Wagner on how global warming threatens the world economy

Backward thinking poses a threat to a wind-energy tax credit that's helping to wean the country off fossil fuels

Striking images of our home planet as seen from orbit in 2012

Polish photographer captures early morning mist and fog rolling through the trees

Mexican-American artist recycles trash into neatly arranged installations at Guggenheim Museum

Sumptuous nighttime photos of forests and stars

So why are we treating it so badly?

Nordic country aims to phase out coal use in energy production by 2025

TED's internationally-focused flagship event announces its thought-provoking theme