I'm pretty sure a couple drops are missing.
Timelines change
Archive offline.
ARPA-H
11hrs ago
Happening Now: President Biden meets with researchers and patients to discuss ARPA-H – a new cutting-edge health research agency that will accelerate progress on curing cancer and other health innovations.
https://mobile.twitter.com/WhiteHouse/status/1504874651314446339
There's also arpa-e
https://mobile.twitter.com/ARPAE
Nanshy mentioned these recently.
What other ARPAs are there?