I've been trying to drive less, using the bike for errands instead of the car whenever I can, composting, buying less stuff, not using plastic bags, plastic in general, but it seems like a drop in the bucket when I see for example some massive SUV idling doing nothing for 20 minutes just waiting for someone.

5 things to know about the new UN report on climate change

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More than three decades ago, a collection of scientists sanctioned by the United Nations first warned that humans were fueling a dangerous greenhouse effect and that if the world didn’t act collectively and deliberately to slow Earth’s warming, there could be “profound consequences” for people and nature alike.

The scientists were right.

On Monday, that same body — the Intergovernmental Panel on Climate Change — described how humans have altered the environment at an “unprecedented” pace and detailed how catastrophic impacts lie ahead unless the world rapidly and dramatically cuts greenhouse gas reductions.