Why this effect? Not because @GretaThunberg ate less meat or encouraged her family not to fly: if that's all she'd done, we'd never know her name. No, it's because she did one simple but incredibly powerful thing we can all emulate: she raised her voice to advocate for change. https://twitter.com/GeoffreySupran/status/1354102674292092930
Individual's power to alter the world is splashed across human history; and social science is starting to understand how we do this. A tsunami of change begins by changing social norms & accumulating a groundswell of (at first) nearly invisible support. https://www.sciencealert.com/change-don-t-happen-overnight-but-here-s-how-social-movements-have-succeeded
And who's the best person to talk about climate change? It turns out we scientists are the second most trusted messengers. The number one most effective person is YOU: to friends, family and people you know. https://www.theclimatechat.org/messengers 
PS. For the data on why talking about it is so important, check out these three maps from @YaleClimateComm. If we don't talk about it, why would anyone care? And if no one cares, how will we act?
PPS. for more on the importance of walking the walk and (of course) talking about what we and others are doing , which is the #1 mechanism by which we alter social norms, see ... https://twitter.com/ManuelGrebe/status/1354126994129248260?s=20
And just to be clear, I'm not advocating spending much time talking to dismissives. This thread explains why. I'm talking about talking to the 90% of us whose perspectives and opinions can be moved! https://twitter.com/KHayhoe/status/1235204287891988481?s=20
You can follow @KHayhoe.
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