If lights are flickering when you record videos, you probably need to change the settings on your camera to match your country’s grid frequency. Almost every video recording device will have a 50/60Hz setting somewhere.

I didn’t intend to suggest that Carl Sagan invented climate science in 1985, just that the political conversation has been clear and ongoing for decades (indeed, longer than 40 years), yet the opposing narratives continue to claim it’s unproven, and the progress remains insufficient.

40 years ago.

It’s so easy to lose sight among all the gish-galloping nonsense around these topics just how long the problem has been almost fully understood and very clearly articulated. It’s absolutely devastating to think about how catastrophically the world has failed to meet the challenge he describes here in the intervening decades.