11/20/2009 09:38 PM
Signs That Swine Flu Wave Has Peaked in U.S.
The Centers for Disease Control and Prevention said flu activity was declining in all regions of the country.

11/20/2009 09:34 PM
Panel Sees No Need for A-Bomb Upgrade
Amid concerns over an aging stockpile, federal advisers have concluded that programs to extend the life of the nation’s nuclear arms ensure their destructiveness for decades to come.

11/20/2009 08:30 PM
Vital Signs: Childhood: U.S. Draws Low Marks on Premature Births
The nation, where one out of eight babies are born prematurely each year, earned a D from the March of Dimes.

11/20/2009 07:52 PM
Vital Signs: Smoking in U.S. Declines but Not by Much
Some 20.6 percent of Americans were current smokers in 2008, a drop from 20.9 percent in 2004, the Centers for Disease Control and Prevention said.

11/20/2009 08:10 AM
University Weighs Tighter Limits on Stem Cell Research
The University of Nebraska would be the first such institution to set stricter limits than what national or state law allows.

11/20/2009 07:55 AM
Industrialized Nations Unveil Plans to Rein in Emissions
Prior to a climate change meeting scheduled for Copenhagen, industrialized countries, except the United States, are offering targets to curb greenhouse gases.

11/20/2009 07:04 AM
| Science and Health: Chemical May Help Down Syndrome Sufferers
Increasing the levels of a message-carrying chemical in the brain may help prevent some of the memory deficits in Down syndrome.

11/20/2009 07:01 AM
Sounds During Sleep Aid Memory, Study Finds
People who heard specific sounds while sleeping had enhanced memories upon awakening, researchers said.

11/20/2009 06:15 AM
New Data Shed Light on Large-Animal Extinction
A team from the University of Wisconsin uncovered a crucial sequence of events that rules out some explanations and severely constrains others.

11/20/2009 03:37 AM
Paying More for Flights Eases Guilt, Not Emissions
The sheer size of the airline industry’s emissions makes it hard to judge the effectiveness of carbon offset programs.

11/19/2009 08:51 PM
Panel Urges Mammograms at 50, Not 40
The new recommendations, released Monday by an influential group, reverse longstanding guidelines.

11/19/2009 08:46 AM
Business of Green: Seeking Wind Energy, Some Consider the Sea
The hope among advocates is that deepwater turbines will solve some of the problems of land-based turbines and those that are built on foundations in shallow water.

11/19/2009 08:43 AM
Business of Green: Storm Over the Chamber
Thomas Donohue, the United States Chamber of Commerce’s president, expressed hostility toward climate legislation, which led several businesses to resign in protest.

11/19/2009 07:57 AM
Seas Grow Less Effective at Absorbing Emissions
The Earth’s oceans have recently grown less efficient at sopping up carbon dioxide from fuel emissions, new research suggests.

11/19/2009 07:49 AM
California Imposes Rule for Efficiency on Some TVs
The state recognized that giant new flat-panel televisions have become major power guzzlers.

11/19/2009 03:11 AM
Scientist at Work: Nathan Myhrvold: After Microsoft, Bringing a High-Tech Eye to Professional Kitchens
Nathan Myhrvold, a former chief technology officer at the software company, is testing food in a lab near Seattle for a specialized cookbook.

11/19/2009 02:53 AM
Breaching a Barrier to Fight Brain Cancer
An experimental treatment for glioblastoma suppresses a barrier to deliver a drug directly to brain tumors.

11/19/2009 02:49 AM
Findings: A Case in Antiquities for ‘Finders Keepers’
Do laws about the ownership of ancient artifacts help or hurt archaeology?

11/19/2009 02:48 AM
Shuttle Atlantis Lifts Off for 11-Day Mission
Atlantis set off for the International Space Station, carrying spare parts and equipment as a hedge against failures after the shuttle fleet is retired next year.

11/18/2009 05:57 PM
Little Progress in Freeing a Rover on Mars
Engineers tried to move the Spirit from a sand trap where it became stuck in May, but the maneuvers stopped after less than a second.

11/18/2009 04:51 PM
Essay: Is Doomsday Coming? Perhaps, but Not in 2012
Scientists give many reasons not to worry about predictions based on the Mayan calendar that the world will end in three years.

11/18/2009 04:23 PM
A Genetics Company Fails, Its Research Too Complex
The demise of deCode Genetics was largely the result of learning that researching genes that cause diseases was far more complex than anyone originally thought.

11/18/2009 07:04 AM
Personal Health: A Dental Shift: Implants Instead of Bridges
Implants are the best solution to replace lost teeth in most cases, and they are more economical than bridges over time.

11/17/2009 04:54 PM
First Mention: Fluoride, 1931
The New York Times reported the link between fluoride and cavity prevention on June 14, 1931.

11/17/2009 04:49 PM
Study Ties Restrooms to Illnesses on Cruises
A study found dirtier restrooms on ships with outbreaks of gastrointestinal sickness.

11/17/2009 04:30 PM
Global Update: Congo’s Army Accused of Striking Villages as Refugees Waited for Measles Shots
The medical charity Doctors Without Borders has accused the Congolese Army of attacking the villages of Rwandan refugees as they waited for measles shots offered by the charity.

11/17/2009 06:10 AM
Vital Signs: Screening: One More Reason to Get Up Early
The new study looked at the results from colonoscopies performed on 477 patients at the West Los Angeles Veterans Medical Center in 2006 and 2007.

11/17/2009 06:10 AM
Vital Signs: Risks: 5 Pathogens Linked to Risk for Stroke
The lead author of a study said low-level infection and inflammation in vessel walls might be leading to disease.

11/17/2009 06:09 AM
Vital Signs: Prognosis: Lingering Pain After Surgery for Breast Cancer
Almost half the patients in a Danish study reported chronic pain two to three years after treatment.

11/17/2009 06:08 AM
Really?: The Claim: A Person Can Contract Two Colds at One Time
Can a person be sick with two colds at once?

11/17/2009 06:04 AM
Cases: Checking the Right Boxes, but Failing the Patient
As doctors bustle from one well-documented chart to the next, no one is counting whether they are still paying attention to people.

11/17/2009 06:01 AM
Letters: In Your Dreams (1 Letter)
To the Editor:.

11/17/2009 06:01 AM
An Air-Traffic Upgrade to Improve Travel by Plane
A plan by the Federal Aviation Administration would replace radar with the Global Positioning System.

11/17/2009 06:00 AM
Letters: Manipulating Nature (1 Letter)
To the Editor:.

11/17/2009 05:59 AM
Letters: Solar Journeys (2 Letters)
To the Editor:.

11/17/2009 05:57 AM
Observatory: Changes in the Climate and a Windier Great Lake
Chalk up another effect of climate change: it’s getting windier over Lake Superior.

11/17/2009 05:57 AM
Observatory: Digging Into the Science of That Old-Book Smell
Is the smell of old books — musty, slightly acidic, even grassy — quantifiable or useful?

11/17/2009 05:56 AM
Observatory: When Mountain Lions Hunt, They Prey on the Weak
Mountain lions seem to actively seek out mule deer infected with chronic wasting disease.

11/17/2009 05:51 AM
Q & A: In Search of the Geep
If a sheep and a goat mate, is the offspring a geep?