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Can This New A.I. Tool Help Detect Blood Poisoning?

The algorithm scans electronic records and may reduce sepsis deaths, but widespread adoption could be a challenge

A pharmacist prepares to administer a Covid-19 booster shot to help protect a patient against the Omicron subvariants BA.4 and BA.5.

Four Big Questions About the New Covid-19 Boosters, Answered

The FDA and CDC recently recommended new boosters to target the Omicron subvariants. Here’s what you need to know about them.

A registered nurse measures out a monkeypox vaccine in Miami, Florida.

Six Big Questions About the Monkeypox Virus, Answered

The United States recently declared the monkeypox outbreak a public health emergency. Here’s what you need to know about the disease

Surgeon Bartley Griffith examines the pig heart before the transplant.

Why Did the First Human Patient to Receive a Pig Heart Transplant Die?

Scientists have come up with at least four explanations

As of June 15, the World Health Organization had recorded a total of 2,103 confirmed monkeypox cases in 42 countries. Pictured: a colorized transmission electron micrograph of monkeypox virus particles (green) cultivated and purified from cell culture

History of Now

What You Need to Know About the History of Monkeypox

Mired in misconception, the poxvirus is endemic in certain African countries but was rarely reported in Europe and the U.S. until recently

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