1.2 billion people on Earth still don't have electricity. Even where cell phones are now common, like sub-Saharan Africa and parts of India, villagers still walk miles to charge them. But new large-scale, sustainable solutions will not only usher in a new era of light, but be...
1.2 billion people on Earth still don't have electricity. Even where cell phones are now common, like sub-Saharan Africa and parts of India, villagers still walk miles to charge them. But new large-scale, sustainable solutions will not only usher in a new era of light, but...