Category: Science

The Lab Says It’s Cancer. But Sometimes the Lab Is Wrong.

Thousands of patients may receive incorrect cancer diagnoses each year because of biopsy mix-ups. New technology can help prevent the mistakes — if pathologists adopt it.

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E.P.A. Moves to Rescind Contested Water Pollution Regulation

Environmentalists strongly supported the rule, which was a key conservation initiative of the Obama administration. But landowners and developers have bitterly opposed it.

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How I Got the Shot: To Photograph a Galápagos Tortoise, Get Out of the Race

Slow and steady, learns Federico Rios Escobar, isn’t just great advice for composing an image; it’s also an appealing state of mind.

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Carbon in Atmosphere Is Rising, Even as Emissions Stabilize

Scientists are concerned over the cause of the rapid rise, which may indicate the world’s natural sponges that absorb carbon dioxide have changed.

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Q&A: A Matter of Considerable Gravity

All the planets in the solar system interact gravitationally with the sun, but Jupiter’s great mass makes this interaction visible.

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Q. & A.: Tell Us 5 Things About Your Book: ‘The Mind of God’

The neurologist Jay Lombard discusses the brain and its connection to what he describes as our deeper, spiritual underpinnings.

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John E. Sarno, N.Y.U. Rehabilitation Doctor, Dies at 93

Dr. Sarno maintained that most nontraumatic instances of chronic pain are physical manifestations of deep-seated psychological anxieties.

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The Times’s Resident Expert for a World on Fire

Canada, Portugal, London: How the fire expertise of our Phoenix bureau chief informs our global reporting.

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Trilobites: Solving the Scorching Mystery of the Sun’s Erupting Plasma Jets

After decades of study, scientists have developed a model to explain how violent solar spicules form.

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Trilobites: Waves Above the Earth May Have Once Caused a ‘Nocturnal Sun’

Historical observations of bright nights that were almost like daytime have a new explanation in forces of the upper atmosphere.

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