The world would save at least $12 trillion by phasing out fossil fuels and shifting to renewable energy by 2050, according to a new analysis from the University of Oxford.
Royal Dutch Shell, though still reliant on profits from fossil fuels, is investing more in renewable energy. Critics say the changes have to come quicker.
More frequent flooding is overwhelming city drainage systems, sending raw sewage into rivers and streams. But Philadelphia is trying an innovative fix — capturing rainwater before flows into city drains.
