The world's seas are simmering, with record high temperatures spurring worry among forecasters that the global warming effect may generate a chaotic year of extreme weather ahead.
As fires have surged in the Amazon, the Brazilian President Jair Bolsonaro’s disdain for environmental-protection measures has drawn international attention.
If things continue as they are now, the glaciers are likely to lose two-thirds of their total ice. For a region already plagued by poverty and inequality, that eventuality is catastrophic.
Decades ago, the economist William Nordhaus demonstrated how a “spaceship economy” could thrive if governments made sure that companies paid a price for the environmental damage they caused.