The planet is barreling toward 1.5 degrees of global warming as soon as 2030 unless we enact “unprecedented changes in all aspects of society,” a dire United Nations report warned in October.

To reduce our impact on the climate and avert disaster, it’s going to take more than switching to high-efficiency light bulbs. But the most effective ways that individuals, policymakers and businesses can reduce our carbon footprint might surprise you.

Let’s see how much you know about what can be done to fight climate change.