Environmental activist Bill McKibben has long been known for his dire warnings about climate change, starting with his 1989 book The End of Nature, which highlighted the potential effects of global warming.
McKibben has been a vocal advocate for environmental issues, organizing protests against the fossil fuel industry and sounding the alarm about human activity's impact on the planet, earning him a reputation for "dark realism."
His stark and straightforward foreboding about the future of the planet has been a hallmark of his advocacy.
However, the rapid growth of renewable energy, particularly solar power, has led McKibben to adopt a more optimistic outlook, suggesting that this development could finally begin to slow climate change.
Autor's resume: Bill McKibben becomes optimist.