Why Measles Outbreaks May Be the New Normal

Recent Trump administration actions are setting the stage for a measles resurgence, experts fear.

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A Federal Lab That Tracked Rising S.T.I.s Has Been Shuttered

The United States can no longer keep tabs on drug-resistant gonorrhea, among other infections, scientists said.

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The Territory Is Tiny and So Is the Newborn Caterpillar Defending It

As they cling to leaf tips, newborn warty birch caterpillars produce vibrations that can ward off invaders approaching their millimeter-size domain.

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Giant Sloths’ Hairy Truth Revealed by Scientists

New research painted a more accurate picture of the megafauna that spread widely around the Americas before they went extinct.

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Trump Administration Demands Additional Cuts at C.D.C.

In addition to reductions at agency personnel, federal regulators are demanding $2.9 billion in contract cancellations, The Times has learned.

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C.D.C. Cuts Threaten to Set Back the Nation’s Health, Critics Say

The reorganization that began on Tuesday will scale back an agency that has been a public health model around the world.

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Shingles Vaccine Can Decrease Risk of Dementia, Study Finds

A growing body of research suggests that preventing the viral infection can help stave off cognitive decline.

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This Tree Wants to Be Struck by Lightning

Before a discovery in a Panamanian rainforest, “it seemed impossible that lightning could be a good thing for the trees,” a scientist said.

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A New Dinosaur Museum Rises From a Hole in the Ground in New Jersey

The museum hopes that after learning about the planet’s prehistoric past, people will do more to preserve Earth’s future.

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Under Pressure, Psychology Accreditation Board Suspends Diversity Standards

As the Trump administration threatens to strip accrediting bodies of their power, many are scrambling to purge diversity requirements.

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