Can Renewables Replace Fossil Fuels?

CNN's John Sutter looks at three hopes for the future of renewable energy. One is that we can replace fossil fuels with renewables without killing economy, he says. The other two are to stop climate change and allow biodiversity to flourish again, writes Sutter. Third hope: We can grow exponentially in size and standard of living sustainably - Sutter. "We cannot use renewables as an excuse to continue business as usual"