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Fauci Pleads the Fifth, Refusing to Answer Questions on Covid Origins at Senate Hearing

SHERYL GAY STOLBERG

Senator Rand Paul said the committee he leads would vote next week on whether to hold Dr. Fauci in contempt of Congress.

The untold science and drama of Lewis and Clark’s expedition

Historian Craig Fehrman unpacks the science, politics and human stories behind one of America's most famous expeditions

How to surf on Saturn’s moon Titan

Lakes of liquid methane on Titan, Saturn's largest moon, could offer exhilarating—and terrifying—opportunities for otherworldly surfing

Secret eruption offers tantalizing glimpse of underwater volcanoes

Frothy rock floating on the ocean near Papua New Guinea is the sign scientists needed that, hidden from view, an underwater volcano was erupting

Chilean mummies reveal a lost lineage of smallpox

Centuries-old DNA that was found in these mummies belongs to an extinct viral lineage of smallpox that was brought across the Atlantic during European colonization of the Americas

How flowers shaped the world as we know it

David Haskell brings readers through millions of years of botanical history for his latest book, How Flowers Made Our World

Everyone alive may carry DNA from a ‘ghost lineage’ of human ancestors

Scientists analyzing modern genomes may have found a long-lost branch of the human family tree

3 charts show how extreme heat is costing us hours of lost sleep

The U.S. has been pummeled with heat waves this summer. Here's how hot overnight temperatures can get in the way of a good night's rest—in 3 charts

Postpartum psychosis is at the center of the Lindsay Clancy trial. What is it?

A high-profile court case is calling attention to this rare and understudied condition

Eating less protein could help you live longer

While "protein maxxing" is all the rage, reducing your protein intake could add years to your life

AI helped produce two proofs for the same cryptography problem

An M.I.T. Ph.D. student and two University of California system cryptographers used GPT-5.6 Sol Ultra in different ways, raising new questions about independent discovery and scientific credit

Gunther von Hagens, Creator of Polarizing ‘Body Worlds’ Exhibits, Dies at 81

CLAY RISEN

A German scientist, he developed a process for turning corpses into posable figures. His shows drew millions of visitors, and many detractors.