In Davos, Switzerland, global elites are gathering at the World Economic Forum this week. While some of the world’s wealthiest people discussed economic and business issues, other speakers, including renowned British natural historian Sir David Attenborough, sounded the alarm on the dangers of climate change.

David Attenborough: “It’s difficult to overstate it. We are now so numerous, so powerful, so all-pervasive, the mechanisms that we have for destruction are so wholesale and so frightening, that we can actually just exterminate whole ecosystems without even noticing it.”

That was David Attenborough speaking with Prince William on Tuesday.

Brazilian President Jair Bolsonaro also spoke at the World Economic Forum, calling on business leaders to invest in Brazil, citing the country’s biodiversity and “abundant mineral riches.” Environmentalists say Bolsonaro will speed catastrophic climate change through deregulation and by opening up vast swaths of the Amazon to agribusiness giants.