Electric cars are getting cheaper, more efficient and can travel farther than ever. China is driving the transition, but Europe and other countries are catching up fast.
As rising temperatures melt glaciers and thaw frozen ground, the courses of Himalayan rivers are shifting and changing shape much more rapidly than before.
Urban planners have been asking the wrong question. It's not how dense a city is — it's how close. The sweet spot for shorter commutes and lower emissions, for many cities, forms a ring.
The clean energy sector is showing resilience despite challenges thrown at it by a hostile White House, a recent report found. A string of legal victories has further dampened the Trump administration’s efforts to halt wind and solar power.
