David Keith

@DKeithClimate

Science and Technology Policy, mostly on climate, since 351 ppm. Now focused on solar geoengineering . Founded Carbon Engineering. Bias for nature.

2/3 Canmore & 1/3 Cambridge
keith.seas.harvard.edu
Joined September 2015
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  1. Pinned Tweet
    Nov 11

    1/4: 3 new papers on solar geoengineering research and policy released today in Science:

    2 replies 14 retweets 42 likes
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  2. Dec 15

    Congrats to the far better-looking Professor David Keith....recognised for demonstrating environmental leadership in ecosystem management.

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  3. Dec 9

    Dear check our podcast . We've had some great guests. Jody Freeman was terrific. A sobering take on how & when the Biden energy agenda might collide with the Supreme Court.

    Really enjoyed being a guest on the Canadian podcast/webinar w my Harvard colleague on US climate policy, the Biden admin’s first year + what to look for in 2022. Tune in here
    4 retweets 8 likes
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  4. Dec 7

    A very important step in building a more global and inclusive SRM research community It's been a long slow road from the early discussions that created SRMGI in the wake of the Royal Society Geoengineering report in 2009.

    After a decade as a project housed at other NGOs, the SRM Governance Initiative (SRMGI) is an independent non-profit organisation and changed its name to The Degrees (Degrees stands for Developing world Governance, Research & Evaluation of SRM) Initiative
    2 retweets 9 likes
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  5. Dec 7

    Condolences. What nonsense!

    I'm being sued in Shasta County for saying that (i) contrails are contrails and (ii) no-one is deploying stratospheric aerosol geoengineering. Seriously??
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  6. Dec 7

    Interesting conversation, hear on "Plan A+"

    Should solar geoengineering be considered as part of our response to climate change? See what (former spokesperson for ) and I had to say about this at this debate:
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  7. Dec 7

    What the heck is Carbon Management?! CCS? CDR? Utilization? Negative emissions? Interesting panel this morning working to wrap our collective heads around a wide topic. We started at 4 AM my time -- wish I had not been so sleepy

    What can more holistic approaches to management offer for developing technology pathways to net ? What policies could ensure that one technology isn't a barrier for another? 🖥️ Follow the discussion today at 12:00 CET ▶️
    1 retweet 7 likes
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  8. Dec 7

    Jody is an amazing colleague, a top environmental lawyer who helped drive CAFE standards and more in the Obama administration. Who better to tell us what might happen next? Join us for live Q&A tomorrow 11:30 MT. Added bonus, she's 🇨🇦

    What do the first 10 months of the Biden administration signal for Canadian energy and policy? Find out on the next episode of w/ Professor, Climate/Energy Expert, + Former WH Official
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  9. Dec 4

    Deicing @ YUL/Montreal seems far more painstaking than I recall. It's not snowing hard, yet two to each wing and careful visual along with feeling the leading edge by hand. More efficient use of deicing fluid? More evidence about risks of very lightly iced wings?

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  10. Dec 4

    This was recorded and is, or soon will be, available on this site:

    Excited to talk with Neal Stephenson about his new novel Termination Shock at 7 PM Eastern tomorrow. Register here
    2 retweets 2 likes
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  11. Dec 4

    Best up to date summary l have seen yet: How bad is Omicron? What scientists know so far

    1 reply 1 retweet 1 like
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  12. Dec 1

    Excited to talk with Neal Stephenson about his new novel Termination Shock at 7 PM Eastern tomorrow. Register here

    1 reply 5 retweets 12 likes
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  13. Nov 27

    8/8 Here's hoping that whatever the actual risk of , its emergence spurs action. It's time to stop f**ing around. On Covid. And on Climate.

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  14. Nov 27

    7/8 Why not stop f**ing around? Mandate vaccines. Supercharge manufacture. Test. There are a host of reasons why our societies have fumbled. Mistakes are inevitable. But it's hard to escape a sense of pervasive failure. Hard not to reflect on lessons for climate action.

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  15. Nov 27

    6/8 Test: almost 2 years in and testing is still haphazard. Antigen tests miss low viral loads but are cheap and effective at detecting the infectious. Why not use them as screening? Why make policy on masking and social isolation more responsive to prevalence?

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  16. Nov 27

    5/8 Manufacture and make sensible risk tradeoffs about testing. The magic of mRNA vaccines is that they can be very rapidly adapted to new variants, yet release of mRNA vac tweaked for Delta waits on testing. is this the right very risk tradeoff?

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  17. Nov 27

    4/8 As the Economist righty argued a massive investment in vaccine is sill penny change when measured against the economic harms of covid. Let alone the moral failure to save lives with a tool now hoarded by the rich. Stop f**ing around.

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  18. Nov 27

    3/8 Manufacture: The US *just* announced a few to increase mRNA vac production to 1bn per year. Talk about f**ing timidity. Why did the rich world not spend 10X a year ago to accelerate production and distribute to the world?

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  19. Nov 27

    2/8 Mandate: We don't let people come to their own conclusions about drunk driving. Want to drive? Keep your blood alcohol low or go to jail. US drunk driving kills 10k per year while covid is several 100k. Want to be out in public? Have your vaccination certificate.

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  20. Nov 27

    1/8 Time to stop f**king around? I am no epidemiologist. may or may not be a new horror. But, if not some other variant will. What might it mean to stop f'ing around? Mandate, Manufacture, and Test

    4 replies 5 retweets 25 likes
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  21. Nov 26

    Thank you ! I have been reading a lot of epidemiology on heat impacts. They are real and important, but if I am doing the math right, only under RCP 8.5 near 2100 does predicted heat mortality get as big as air pollution is now.

    On Wednesday, published a long essay of mine on the brutal effects of air pollution, which kills ten million a year. But beyond the moral horror, air pollution offers strategic and conceptual lessons for climate, as well. A long thread (1/x).
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