Felix Moser / AP

Researchers at MIT have engineered bacteria to sense red, green, and blue light — and then create a picture of what they've "seen," like the arrangement of fruit pictured above, by expressing pigments in those colors.

"At the most fundamental level, we've given E. Coli the ability to detect different kinds of light and then compose an image," says genetic engineer Felix Moser. "It's a demonstration that synthetic biology tools have come a long way in the last decade."

Synthetic biologists designed and custom built new genetic parts for bacterial cells that create: light-detecting proteins, a circuit to navigate and leverage the cell's mechanisms for turning genes on and off, a capacitor of sorts to regulate the energy burden being placed on the cell when it expresses these different proteins, and enzymes that actually produce the pigments.

Then, with the 1970s' finest slide projector technology, they projected an image onto a plate of bacteria and, the next morning, the bacteria had recreated the image they'd "seen."

Beyond bacteria with red-green-blue vision, precisely directed light could conceivably be used to control the production of chemicals or vaccines, essentially turning bacteria into optimized manufacturing facilities.

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Updated 6 mins ago - Politics & Policy

Coronavirus dashboard

Illustration: Sarah Grillo/Axios

  1. Global: Total confirmed cases as of 3 a.m. ET: 31,605,656 — Total deaths: 970,934 Total recoveries: 21,747,491Map.
  2. U.S.: Total confirmed cases as of 3 a.m. ET: 6,897,432 — Total deaths: 200,814 — Total recoveries: 2,646,959 — Total tests: 96,612,436Map.
  3. Health: The U.S. reaches 200,000 coronavirus deaths — The CDC's crumbling reputation — America turns against coronavirus vaccine.
  4. Politics: Elected officials are failing us on much-needed stimulus.
  5. Business: Two-thirds of business leaders think pandemic will lead to permanent changes — Fed chair warns economy will feel the weight of expired stimulus.
  6. Sports: NFL fines maskless coaches.

Trump pushes to expand ban against anti-racism training to federal contractors

Trump speaking at Moon Township, Penns., on Sept. 22. Photo: Mandel Ngan/AFP via Getty Images

President Trump announced late Tuesday that the White House attempt to halt federal agencies' anti-racism training would be expanded to block federal contractors from "promoting radical ideologies that divide Americans by race or sex."

Why it matters: The executive order appears to give the government the ability to cancel contracts if anti-racist or diversity trainings focused on sexual identity or gender are organized. The memo applies to executive departments and agencies, the U.S. military, federal contractors and federal grant recipients.

Louisville declares state of emergency as Breonna Taylor decision looms

A demonstrator holds up a sign of Breonna Taylor during a protest in Louisville, Kentucky. Photo: Brandon Bell/Getty Images

Louisville Mayor Greg Fischer declared a state of emergency Tuesday "due to the potential for civil unrest" ahead of Kentucky Attorney General Daniel Cameron's expected announcement on the Breonna Taylor case.

Of note: Louisville has witnessed more than 115 days of protests over the police killing of Taylor, an unarmed Black woman, with calls for all the officers involved to be charged.

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