Dr. Anthony Fauci, director of the National Institute of Allergy and Infectious Diseases (NIAID), said at a press briefing Tuesday that while the risk of contracting the coronavirus for the average American remains "relatively low," the U.S. must realize that "as a nation we can’t be doing the kinds of things we could do a few months ago."

Why it matters: Hundreds of organizations, schools and companies have begun taking this warning seriously, canceling classes, conferences, sporting events and even political rallies as it becomes clear that the U.S. will not be able to stop the spread of the coronavirus into its borders.

What he's saying:

"It doesn't matter if you're in a state that has no cases or one case. You have to start taking seriously what you can do now for if and when the infections will come — and they will come, sorry to say, sad to say, they will — but when you're dealing with an infectious disease, you know, you always have that metaphor that people talk about. That Wayne Gretzky, he doesn't go where the puck is, he's going where the puck is going to be. Well, we want to be where the infection is going to be, as well as where it is."
— Dr. Anthony Fauci

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Illustration: Aïda Amer/Axios

The mushroom clouds over Hiroshima and Nagasaki have remained unreplicated for 75 years in part because the U.S. and Soviet Union — after peering over the ledge into nuclear armageddon — began to negotiate.

Why it matters: The arms control era that began after the Cuban Missile Crisis may now be coming to a close. The next phase could be a nuclear free-for-all.

Pelosi, Schumer demand postmaster general reverse USPS cuts ahead of election

Schumer and Pelosi. Photo: Alex Wong/Getty Images

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2 hours ago - Science

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Photo illustration: Aïda Amer/Axios. Photos: Brian Ach/Getty Images for Wired and BSIP/UIG via Getty Images

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Why it matters: Testing shortages and backlogs underscore a need for improved mass testing for COVID-19. Diagnostic tests based on CRISPR — which Doudna and colleagues identified in 2012, ushering in the "CRISPR revolution" in genome editing — are being developed for dengue, Zika and other diseases, but a global pandemic is a proving ground for these tools that hold promise for speed and lower costs.