Plan to Track Quake Threat Is Questioned
By JOHN UPTON
After last year’s earthquake-induced nuclear meltdown at the Fukushima Daiichi plant in Japan, PG&E;, under public pressure, announced that it was committed to monitoring seismic activity.
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Growth Prospects for Uranium Stir Concerns
By KATE GALBRAITH
Axel Gerdau for The Texas Tribune
This uranium processing plant in Hobson hopes to increase the 200,000 to 250,000 pounds of yellowcake it produces each year.
South Texas is striving to become a mining hub for uranium but environmentalists have concerns about contamination.
Lester Breslow, Who Linked Healthy Habits and Long Life, Dies at 97
By DOUGLAS MARTIN
Dr. Breslow was a public health leader whose research gave mathematical proof to the notion that people can live longer and healthier by changing habits like smoking, diet and sleep.
Side Effects
Awake or Knocked Out? The Line Gets Blurrier
By JAMES GORMAN
Consciousness is not a simple state that is either on or off. Studies with anesthesia showed patients responding to commands or communicating, but later having no memory of doing so.
Nigeria Tested by Rapid Rise in Population
By ELISABETH ROSENTHAL
Much of the Earth’s population growth is in sub-Saharan African nations like Nigeria, where trends that have lowered birthrates elsewhere have not yet caught on.
Graphic
Experts Split on Possibility of Remains at Titanic Site
By WILLIAM J. BROAD
A federal ocean agency released an image that it says suggests that corpses are at the wreckage site, which officials are seeking to protect from salvagers.
Duplicating Afghanistan From the Ground Up
By MALIA WOLLAN
Military officials send recruits from across the country to Central California because it shares many agroclimatic characteristics with Afghanistan.
How Green Are Electric Cars? Depends on Where You Plug In
By PAUL STENQUIST
A report found that recharging an electric vehicle in some parts of the United States will generate the same amount of greenhouse gases as driving many gas-powered cars.
When It Comes to Carbon Dioxide, Lower Is Better, and Zero Is Perfect 
For North Korea, Rocket’s Failure May Be Learning Opportunity
By WILLIAM J. BROAD
Major setbacks are a normal part of rocket programs and can produce crucial information, scientists say.
Making Education Brain Science
By JENNY ANDERSON
Neurology informs the approach at a Manhattan institution founded by members of the Blue Man Group and their wives for children from pre-kindergarten through third grade.
Texas Board Approves Rules on Use of Stem Cells
By MINJAE PARK
A medical board voted to allow procedures that are done for research and are subject to approval, conditions that supporters say will offer patients protection.
Science Times: April 10, 2012
The Iceberg Was Only Part of It
By WILLIAM J. BROAD
Associated Press
In April 1912, the luxury liner Titanic departed on its maiden voyage to New York.
A century after the sinking of the Titanic, new research argues that record tides and ocean mirages may help explain a disaster long associated with human ineptitude.
Audio and Photos: They Called It ‘Unsinkable’
As Hundreds of Men Perished, One Ignored a Rumor to Survive
By NICHOLAS WADE
Only 14 percent of the men traveling second-class on the Titanic survived. A grandson of one of them is left to wonder what helped him beat the odds.
A Fragile Tourist Attraction on the Ocean Floor
By WILLIAM J. BROAD
The United States and the International Maritime Organization are drawing up recommendations for the operation of the mini-submarines that ferry visitors to the Titanic.
A Celebration of Science With a Popular Touch
By KAREN WEINTRAUB
Through festivals — not fairs — John Durant, of the M.I.T. Museum, strives to demystify science in an era of divisive issues like climate change, vaccines and embryonic stem cell research.
Seeking Robots to Go Where First Responders Can’t
By JOHN MARKOFF
The Pentagon’s research and development agency is to announce a competition to design specialized robots that can work in disaster zones while operating common tools and vehicles.
Side Effects
The Intricate Music of the Human Genome
By JAMES GORMAN
A study of recurring DNA snippets in the people of Madagascar calls to mind the phrases that punctuate Wagner’s “Ring” operas.
Health News
Joyce Hesselberth
Scientists are bringing rigor to the study of the emotional and psychological effects of pet ownership on children.
More Multimedia
A Passion for Nature
A selection of photographs from the book “A Glorious Enterprise: The Academy of Natural Sciences of Philadelphia and the Making of American Science.”
Back on Staten Island Early, and Wriggling
By COREY KILGANNON
Eel populations, which had been declining on the East Coast, are making a comeback on Staten Island, with large numbers of them appearing earlier than normal.
Antiques
Selling Memorabilia of High-Flying Women
By EVE M. KAHN
Space-exploration auctions, including memorabilia of female astronauts, will be held by Bonhams in New York, Heritage Auctions in Dallas and Regency-Superior in St. Louis.
How Old is the 'Fire Stone'?
April 13, 2012
On the Origin of Therapsids
April 12, 2012
Have You Seen This Animal?
April 11, 2012
More on the Link Between Earthquakes and Fracking
April 15, 2012
Meditation on the Colors of Nature
April 14, 2012
Rethinking Some Old Habits, One of Them Close to Home
April 13, 2012
Science Columns
Q & A
110 in the Shade
By C. CLAIBORNE RAY
There is evidence that more lives are being lost to heart and respiratory ills, as well as infectious diseases spread by carriers whose habitats are expanding.
Observatory
More Brainpower Seen in Soccer’s Top Scorers
By SINDYA N. BHANOO
Soccer players have been shown to have superior executive functions, the brain processes responsible for planning and abstract thinking.
Observatory
Changes in Social Status Seen in Monkeys’ Genes
By SINDYA N. BHANOO
Researchers find that social status may directly affect immune gene expression in groups of rhesus macaques.
Observatory
Tending a Sick Comrade Has Benefits for Ants
By SINDYA N. BHANOO
When ants lick pathogens off an infected comrade, they stimulate their own immune systems, a study found.
From Opinion
Op-Ed Contributor
Why Trees Matter
By JIM ROBBINS
They offer much more than shade. They cool and clean the earth and reduce stress.
Podcast: Science Times
This week: The Titanic 100 years later; the science of science festivals; and rethinking the value of pets.
Health Columns
Personal Health
Caregiving as a 'Roller-Coaster Ride From Hell'
By JANE E. BRODY
Even in the best of circumstances, a woman caring for her sick husband may face disruptions in her work and social life, sleep habits, exercise routine, household management and financial situation.
Really?
Constant Stress Makes You Sick
By ANAHAD O’CONNOR
Elevated levels of cortisol over time can lead to resistance and affect the body's immune response to infections like the common cold and influenza, heightening symptoms.
Opinion
Dot Earth Blog
Penguins' Prospects and Communication Whiplash in 140 Characters
By ANDREW C. REVKIN
Penguin's out of Antarctica was all conveyed in dark tones in 2009
Wordplay Blog
Numberplay: Logic Postponed
By PRADEEP MUTALIK
Two logical conundrums about postponement.
Editors' Picks
Bus-Size Dinosaurs, as Fuzzy as Chicks
Fossils of a previously unrecognized dinosaur show that it is the largest known feathered animal.
Profiles in Science
A series of articles and videos about leaders in science like Richard Dawkins, Nora Volkow, Eric Lander, Michael Gazzaniga and Steven Pinker.
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Times Science Reporters
