Look at a satellite photo of the Earth at night. Some parts of the planet blaze with light, but much of the globe--home to more than a third of the world's population--is still in the dark. Ainsley Lloyd reports from Ghana on the challenges entrepreneurs are facing as they try to ensure energy access for all.
An ambitious project to map the energy consumption of every building in New York City shows off the limitless potential of energy mapping for future planning and development.
How the widespread use of antibiotics in our food production system is creating, and spreading, a new breed of serious diseases.
President Obama has twice rejected construction of the Keystone XL pipeline, declaring it not in the national interest. If you're wondering from where he derives this authority, here's a hint: that's a trick question.
Worried about climate change? Fret not, we have already successfully solved some pretty incredible air pollution problems. Atmospheric chemist Gabriel Isaacman takes a look backward at where we've come from and suggests that, yes, we may still have a bright future ahead.
A group of starlings is called a murmuration. A group of tigers is called a streak (or an ambush). Why?
