The Checkup
Kids’ sleep needs, in historical perspective
Perhaps you’ve heard that kids today desperately need more sleep. A new study says “harrumph.”
When snow hits, so do back injuries. Here are some ways to minimize the risk involved in shoveling.
We may like to believe we call the shots on who we fall in love with, but neurochemistry plays a strong role.
An amendment introduced to a transportation bill would speed the construction of Keystone pipeline.
These images won top honors in the National Science Foundation’s annual competition.
Eating soy-based foods is believed to help prevent breast cancer. Might soy supplements also help?
A documentary tells the story of a scientist hired by Phillip Morris in the 1980s to create a “safe cigarette.”
Space agency continues to explore the cosmos, but its future direction is uncertain
After initial optimism about decision, Catholic leaders call for insurance mandate to be rescinded.
Mice in the early stage of Alzheimer’s had some brain abnormalities reversed and declining mental function restored when they were given low doses of the drug.
Love is the central mystery of life, a metaphor that has survived 400 years of medical research.
Scientists aim to create a feeling of effortless concentration that makes for outstanding performances.
Patient saved over $3,000 on a dental implant by going to a dental school instead of a dentist’s office.
Nearly half of cases are diagnosed at a late stage, when treatment is less likely to be lifesaving.
A noticeable uptick in the number of home births raises questions of insurance coverage.
Though movies show worse, in real life, exposure to a vacuum would be a painful fate but much less gooey.
Farmers are neglecting rules aimed at keeping insects from becoming immune to genetically modified corn.
Breast cancer charity faces more fallout from its decision to restore funding to Planned Parenthood as their vice president resigns.
Research suggests that chronic exposure to airborne particulate matter is associated with increased risk of cognitive impairment in older women.
Perhaps you’ve heard that kids today desperately need more sleep. A new study says “harrumph.”
A study finds that people driving under the influence of cannabis are about twice as likely as unimpaired drivers to be involved in serious car crashes.
Health, Science & Environment Videos
Aurora borealis as seen from space (0:34)
Stunning new time-lapse images of the aurora borealis, or northern lights, have been released by NASA. (Feb. 10)
Aurora borealis as seen from space (0:34)
Stunning new time-lapse images of the aurora borealis, or northern lights, have been released by NASA. (Feb. 10)
Video captures orca whale rescue (1:26)
An orca was discovered tangled in rope and cray pots off the Coromandel Coast in New Zealand. The diver that freed the whale describes the ordeal. (Feb. 9)
Listen: Whales in Indian Ocean basin sing different tunes (0:30)
Researchers at the Wildlife Conservation Society found whales on both sides of the Southern Indian Oceans do not "sing" the same song, which is unique because whales in the same ocean basin usually do. (Feb. 7)
Snowstorm hits Colorado on its way East
A powerful winter storm swept across Colorado on Friday, forcing the cancellation of nearly 600 flights at Denver airport, closing parts of Interstate 70 and sparking a run on grocery stores before the worst weather descended. (Feb. 3)
Komen CEO on Planned Parenthood rift (1:40)
Planned Parenthood said it received more than $400,000 from 6,000 donors in the 24 hours after news broke that its affiliates would be losing grants for breast screenings from the Susan G. Komen for the Cure breast-cancer foundation. (Feb. 2)
Groundhog Day 2012: Punxsutawney Phil emerges from his burrow
At 7:25 a.m. this morning, amidst mostly cloudy skies, and temperatures in the low 30s, Groundhog Phil saw his shadow in the little town of Punxsutawney, Pa.
First video taken of the moon's far side (0:38)
A spacecraft orbiting the moon has captured the first video of the lunar far side that people on Earth can't see. The video was captured by one of NASA's twin Grail probes using MoonKAM, a camera which will eventually be used by students. (Feb. 1)
'Brazilian Blowout' maker concedes health risks (2:09)
The maker of a popular line of Brazilian Blowout hair straightening products settled a lawsuit that it misled consumers about the presence of formaldehyde in the products. (Jan. 31)
From 2010: Punxsutawney Phil sees his shadow
Punxsutawney Phil saw his shadow early Tuesday morning February 2010, forecasting six more weeks of winter during Groundhog Day festivities in Punxsutawney, Pa.
Groundhog Day 2011: Punxsutawney Phil predicts early spring
The world's most famous groundhog did not see his shadow this February, 2011 thus forecasting an early spring. (Feb 2)
Dentist who used paper clips gets jail time
A former Massachusetts dentist was sentenced to one year in jail Monday after he pleaded guilty to numerous charges, including using paper clips instead of stainless steel posts in root canals. (Jan. 30)
Heavy snow hits central New York State (00:57)
More than a foot of lake-effect snow slammed Central New York State on Monday. Local authorities declared a snow emergency. (Jan. 31)Urban Jungle
Song-filled courtship followed by offspring a few days later.
Health news from the wires
A woman’s work-up for laser eye surgery revealed a serious problem she didn’t know she had.
Traffic science struggles to keep cars flowing on highways in D.C. and elsewhere.
Special Reports

One-third of U.S. children are overweight, leaving the health and productivity of an entire generation at risk.
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Live Q&A transcript
Chris Richards discussed the snubs, surprises and sensational moments of the 2012 Grammy Awards ceremony.
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