Bill McKibben isn’t known for his rosy outlook on climate change. Back in 1989, he wrote The End of Nature, which is considered the first mainstream book warning of global warming’s potential effects on the planet. Since then, he’s been an ever-present voice on environmental issues, routinely sounding the alarm about how human activity is changing the planet while also organizing protests against the fossil fuel industries that are contributing to climate change.

McKibben’s stark and straightforward foreboding about the future of the planet was once described as “dark realism.” But he has recently let a little light shine through thanks to the dramatic growth of renewable energy, particularly solar power. In his latest book, Here Comes the Sun: A Last Chance for the Climate and a Fresh Chance for Civilization, McKibben argues that the planet is experiencing the fastest energy transition in history from fossil fuels to solar and wind—and that transition could be the start of something big.
