The Biden administration today began to flesh out a proposal for a new agency—modeled on the military’s Defense Advanced Research Projects Agency (DARPA)—that would seek to speed the development of medical treatments by funding risky, innovative projects. The agency, dubbed ARPA-Health (ARPA-H), would be housed at the National Institutes of Health and have a 2022 budget of $6.5 billion, according to a White House spending request released today.