Our Feel-Good War on Breast Cancer

I used to believe that a mammogram saved my life. I even wrote that in the pages of this magazine. It was 1996, and I had just turned 35 when my doctor sent me for an initial screening — a relatively common practice at the time — that would serve as...

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Researchers Put Sense of Touch in Reach for Robots

Department of Biomedical Engineering/Georgia Institute of Technology In a video produced by the robotics lab at Georgia Institute of Technology, a robotic arm is shown adjusting a blanket. Finding and recognizing objects by touch in your pocket,...

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Kenneth I. Appel, Mathematician Who Harnessed Computer Power, Is Dead at 80

Kenneth I. Appel, who helped usher the venerable mathematical proof into the computer age, solving a longstanding problem concerning colors on a map with the help of an I.B.M. computer making billions of decisions, died on April 19 in Dover, N.H. He...

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In Midwest, Drought Abruptly Gives Way to Flood

CHICAGO — The nation's midsection, which was for months parched by severe drought, suddenly finds itself contending with the opposite: severe flooding that has forced evacuations, slowed commercial barge traffic down the Mississippi River and left...

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François Jacob, Geneticist Who Pointed to How Traits Are Inherited, Dies at 92

-/Agence France-Presse — Getty Images François Jacob, left, and Jacques Monod in 1971. They helped discover how genes are regulated. Dr. François Jacob, a French war hero whose combat wounds forced him to change his career paths from surgeon to...

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Dot Earth Blog: A Cool But Splendid Spring in the Northeast

I had a rare moment to walk in the woods and breath the unusually cool spring air this morning and noted, thanks to my naturalist spouse, Lisa Mechaley, that the Canada mayflower (a.k.a. false lily of the valley) was bursting forth. What's blooming...

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Texas Fertilizer Plant Fell Through Cracks of Regulatory Oversight

Chip Somodevilla/Getty Images Debris littered a field near the West Fertilizer Company plant in West, Tex., where a blast last week killed 14 people. Investigators believe it may have been set off by ammonium nitrate stored there. WEST, Tex. —...

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Police to Disperse Gas to See How It Would Flow in Terror Attack

On three separate days this July, invisible and odorless gases will be released in subway stations and at street level in all five boroughs of New York City. But officials in the New York Police Department will not be alarmed — it was their idea. ...

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Pollution Is Radically Changing Childhood in China’s Cities

Adam Dean for The New York Times Wu Xiaotian, 4, whose breathing problems are linked to air pollution, displaying the mask he usually wears outdoors. BEIJING — The boy's chronic cough and stuffy nose began last year at the age of 3. His symptoms...

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Pyramid Lake Journal: Lahontan Cutthroat Trout Make a Comeback

Max Whittaker for The New York Times Ron Dunn, second from front, fishing for Lahontan cutthroat trout at Pyramid Lake in Nevada. The fish, noted for their great size, have made a comeback. More Photos » PYRAMID LAKE, Nev. — For most fishermen...

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Mind: Zeal for Play May Have Propelled Human Evolution

By Jeff DelViscio, Pedro Rafael Rosado, Abe Sater, Robin Lindsay and Kriston Lewis Buckets of Blickets: Children and Logic: A game developed by researchers at the University of California, Berkeley hopes to show how imaginative play in children...

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Sylvia Todd, Science Star, Tinkers With the Idea of Growing Up

Stephen Crowley/The New York Times Sylvia Todd, 11, produced a robot-drawn watercolor painting for President Obama on Monday at the White House Science Fair. Sylvia Todd's desk is not tidy. It's cluttered with small robots (including a solar-powered...

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Planned Cornell Tech School Gets $133 Million Gift

Cornell Tech, the applied sciences graduate school that Cornell University has planned for Roosevelt Island, has received a gift of $133 million that will help it offer an unusual two-year, two-degree master's program. The gift is for a joint project...

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Natural Gas Use in Long-Haul Trucks Expected to Rise

J. Emilio Flores for The New York Times A driver for United Parcel Service filling a truck with liquid natural gas in Ontario, Calif. The natural gas boom has already upended the American power industry, displacing coal and bringing consumers cheaper...

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Motherlode Blog: Study Links Autism With Antidepressant Use During Pregnancy

A cautiously worded study based on data collected in Sweden has found that "in utero exposure to both selective serotonin reuptake inhibitors (S.S.R.I.'s) and nonselective monoamine reuptake inhibitors (tricyclic antidepressants) was associated with...

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Europe’s Carbon Market Is Sputtering as Prices Dive

Andrew Testa for The International Herald Tribune The trading floor at CF Partners in West London. The market for carbon permits is more volatile than its founders envisioned. LONDON — On a showery afternoon last week in West London, a ripple of...

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Bitter Battle Over Water Rights on Montana Reservation

Tony Demin for The New York Times Jack and Susan Lake, who support the water bill, at their potato farm on the Flathead Reservation. Mr. Lake's family moved there from Idaho in 1934. RONAN, Mont. — In a place where the lives and histories of Indian...

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Patients’ Genes Seen as Future of Cancer Care

Joshua Bright for The New York Times Dr. Laurie Glimcher, dean of Weill Cornell Medical College, visiting the new Belfer Research Building. Electric fans growl like airplanes taking off and banks of green lights wink in a basement at Mount Sinai's...

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