He spoke of the thin blue line in space, which is the troposphere containing oxygen and is only five to seven kilometers thick. On a positive note, he talked about how 90 percent of new electricity generation worldwide last year was renewable, and it’s now the cheapest option in many areas. He also pointed out that humans are pumping out 162 million tons of greenhouse gasses every day, causing as much extra heat as 600,000 Hiroshima-class atomic bombs exploding daily on Earth. There are a multitude of problems Gore linked back to climate change, including boiling oceans and atmospheric rivers creating rain bombs, sucking moisture from land triggering droughts, melting ice caps raising sea levels, and forcing climate refugees numbering 1 billion by century’s end. In terms of the latter, he noted how authoritarianism has been a response to these migrations caused by global warming.