Automatic bug repair

At the Association for Computing Machinery’s Programming Language Design and Implementation this month, MIT researchers presented a new system that repairs dangerous software bugs by...


Costa Rica boasts 99% renewable energy in 2015

View of a wind farm of the National Power and Light Company in Santa Ana, Costa Rica on October 23, 2015 Almost all of Costa Rica’s electricity came from renewable sources this year...


Uruguay Builds Clean Electricity Footprint

In less than 10 years, the country has shrunk its carbon footprint while lowering electricity costs, without calling on the government for renewable energy subsidies. Uruguay’s elect...


Toward roads that de-ice themselves

As winter approaches, stores, cities and homeowners are stocking up on salt, gravel and sand in anticipation of slippery roads. But this annual ritual in colder climates could soon b...


Ice matters

Arctic sea ice, for example, is particularly sensitive to our warming climate and is often cited as a barometer of global change. Around the North Pole, an area roughly the size of E...


How sustainable is vertical farming?

The 44-member, New York City-based Association for Vertical Farming challenged a group of students in Columbia University’s Master of Science in Sustainability Management program, wh...


DXL-2: Studying X-ray emissions in space

There isn’t much visible light in space - but there are numerous other wavelengths of light and scientists want to know what’s out there and where it comes from. On Dec. 4, 2015, NAS...


Climate change: How bad can it get?

Heatwaves Some 1.5 billion people will be exposed to heatwaves every year by 2100 under 2C, according to Avoid 2, a British government-funded consortium of climate change research i...