Climate Change
Climate change deniers are "just not paying attention," she says.
Destroying our planet gets two thumbs way down.
Science says it has happened before.
The candidate links climate change to Syrian conflict. Republicans deem it "absurd."
WHAT'S HAPPENING
"We are talking about extinction."
They also want to know how it can be stopped.
He says he doesn't "want to overreact" to global warming.
The Earth is on track to beating 2014 as the hottest year ever recorded.
