Remember Bill Nye the Science Guy? He taught us about molecules and combustion in the 90s and he was everyone’s favorite Science teacher, however, now Bill Nye is at his wit’s end and he dropped an “F-bomb” so we’d know he’s serious.

Nye was a guest on Last Week Tonight With John Oliver, and he demonstrated just how serious climate change is.

As Bill Nye put it the Earth is on “f___ing fire!” Nye says we can do something to change course, pointing at a fire extinguisher, a bucket of sand and a blanket.

Nye then says climate change solutions aren’t free, “Nothing’s free, you idiots. Grow the f___ up. You’re not children anymore. I didn’t mind explaining photosynthesis to you when you were 12. But you’re adults now, and this is an actual crisis, got it?”

How concerned are you about climate change?

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