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Energy system models love NETs, particularly for very rapid mitigation scenarios like 1.5C (where the alternative is zero global emissions by 2040)! More problematically, they also like tons of NETs in 2C scenarios where NETs are less essential. https://t.co/M3ACyD4cv7 2/10
There is a lot of confusion about carbon budgets and how quickly emissions need to fall to zero to meet various warming targets. To cut through some of this morass, we can use some very simple emission pathways to explore what various targets would entail. 1/11 pic.twitter.com/Kriedtf0Ec
— Zeke Hausfather (@hausfath) September 24, 2020
In model world the math is simple: very rapid mitigation is expensive today, particularly once you get outside the power sector, and technological advancement may make later NETs cheaper than near-term mitigation after a point. 3/10
This is, of course, problematic if the aim is to ensure that particular targets (such as well-below 2C) are met; betting that a "backstop" technology that does not exist today at any meaningful scale will save the day is a hell of a moral hazard. 4/10
Many models go completely overboard with CCS, seeing a future resurgence of coal and a large part of global primary energy occurring with carbon capture. For example, here is what the MESSAGE SSP2-1.9 scenario shows: 5/10

Stephens goes on in his column (which never saw light of day) to cite famous Lee Atwater quote that uses racial slur, and which NYT has cited \u201cat least seven times.\u201d
— Dylan Byers (@DylanByers) February 11, 2021
"Is this now supposed to be a scandal?\u201d he asks.
...
Four times. The column used the n-word (in the context of a quote) four times. https://t.co/14vPhQZktB
That is correct. In his draft he quotes Atwater using the word (4 times) and he does not redact it.
— Dylan Byers (@DylanByers) February 11, 2021
For context: In 2019, a Times reporter was reprimanded for several incidents of racial insensitivity on a trip with high school students, including one in which he used the n-word in a discussion of racial slurs.
That incident became public late last month, and late last week, after 150 Times employees complained about how it had been handled, the reporter in question resigned.
In the course of all that, the Times' executive editor said that the paper does not "tolerate racist language regardless of intent.” This was the quote that Bret Stephens was pushing back against in his column. (Which, again, was deep-sixed by the paper.)
Very good that Rep Raskin is showing the long, consistent history of Trump instigating violence. This context is necessary. They should extend documentation to Trump's advisors -- like Roger Stone calling for a "bloodbath" since 2016 if Trump loses an election #ImpeachmentTrial
— Sarah Kendzior (@sarahkendzior) February 11, 2021
Inside: Dependency Confusion; Adam Curtis on criti-hype; Catalytic converter theft; Apple puts North Dakota on blast; and more!
Archived at: https://t.co/Osts9lAjPo
#Pluralistic
1/

This weekend, I'll be participating in Boskone 58, Boston's annual sf convention, where I'm doing panels and a reading.
https://t.co/2LfFssVcZQ
2/

Dependency Confusion: A completely wild supply-chain hack.
https://t.co/TDRNHUX0Ug
3/

In "Dependency Confusion," security researcher @alxbrsn describes how he made a fortune in bug bounties by exploiting a new supply-chain attack he calls "dependency confusion," which allowed him to compromise "Apple, Microsoft and dozens of others."https://t.co/hn32EmF5qT
— Cory Doctorow #BLM (@doctorow) February 10, 2021
1/ pic.twitter.com/eqFr3GXlyX
Adam Curtis on criti-hype: Big Tech as an epiphenomenon of sociopathic mediocrity, not supergenius.
https://t.co/MYmHOosTk3
4/

Adam Curtis is a brilliant documentarian, and films like Hypernormalization and series like All Watched Over by Machines of Loving Grace had a profound effect on my thinking about politics, technology and human thriving.
— Cory Doctorow #BLM (@doctorow) February 11, 2021
1/ pic.twitter.com/gydJK358BX
Catalytic converter theft: Rhodium at $21,900/oz.
https://t.co/SDMAXrQwdd
5/

Back in the early 2010s, people started falling into open sewer entrances in New York City and other large metros - because a China-driven spike in the price of scrap metal, combined with post-2008 unemployment, gave rise to an army of metal-thieves.https://t.co/gtD72IDCPn
— Cory Doctorow #BLM (@doctorow) February 11, 2021
1/ pic.twitter.com/gdgVJoMoY8

2) The leading hypothesis is that the new variant evolved within just one person, chronically infected with the virus for so long it was able to evolve into a new, more infectious form.
same thing happened in Boston in another immunocompromised person that was sick for 155 days.
3) What happened in Boston with one 45 year old man who was highly infectious for 155 days straight before he died... is exactly what scientists think happened in Kent, England that gave rise to #B117.
Immunocompromised 45 year old suffered from #COVID19 for 155 days before he died. The virus was changing very quickly inside the man's body\u2014it acquired a big cluster of >20 mutations\u2014resembled the same ones seen in #B117 & #B1351. (NPR audio Part 1 of 2)\U0001f9f5https://t.co/7kWiBZ1xGk pic.twitter.com/ZJ7AExB78Y
— Eric Feigl-Ding (@DrEricDing) February 8, 2021
4) Doctors were shocked to find virus has evolved many different forms inside of this one immunocompromised man. 20 new mutations in one virus, akin to the #B117. This is possibly how #B1351 in South Africa 🇿🇦 and #P1 in Brazil 🇧🇷 also evolved.
2) NPR report audio part 2 of 2:
— Eric Feigl-Ding (@DrEricDing) February 8, 2021
Dr. Li couldn't believe what they found. "I was shocked," he says. "When I saw the virus sequences, I knew that we were dealing with something completely different and potentially very important." pic.twitter.com/HT3Yt6djFd
5) “On its own, the appearance of a new variant in genomic databases doesn’t tell us much. “That’s just one genome amongst thousands every week. It wouldn’t necessarily stick out,” says Oliver Pybus, a professor of evolution and infectious disease at Oxford.