(Michael S. Williamson / The Washington Post)
Report: Keystone XL will have no major climate impact
But final approval of the project is still not assured, administration officials say.
Studies find Neanderthal genes in modern humans
Researchers say small traces of DNA have been confirmed in areas of the genome that affect our skin and hair.
Poll: Uninsured’s support for health law drops
Support for the health-care law declined among the uninsured in January, a new poll shows.
Latest headlines
More Health and Science news
Pressure is on Kerry as Keystone pipeline decision nears
Anti-Keystone vigils will be held across the country, while supporters say it’s time to get on with it.
In rural Georgia, sticker shock on federal health exchange
High levels of obesity and cancer and a lack of hospital competition create some of nation’s highest premiums.
Skywatch: What’s happening in the heavens in February
What Jupiter, Mars, Venus and Saturn, as well as other celestial objects, are up to in February.
Backers of wind power want key tax credit restored
Advocates say a prolonged period without the credit will translate directly into lost jobs.
Questions raised about antioxidant use in cancer patients
A new study in mice with lung cancer showed that antioxidant supplements made tumors more aggressive.
Shortage of IV saline sends hospitals scrambling
High demand for saline prompted in part by spike in flu cases in recent weeks.
Archaeologists surprised to find a 3,600-year-old pharaoh
The tomb of a member of a previously unknown dynasty was plundered centuries ago by robbers.
Multimedia
Winter storm paralyzes South
An unexpectedly severe winter storm brought snow, ice and brutal cold to the Deep South.
Post Health & Science on Twitter
Other news
It’s not just Miley Cyrus: Male spiders twerk to avoid death
Male black widows twerk their abdomens to avoid getting eaten by potential female mates.
Hot drinks can restore you, but some have drawbacks
Caffeine and calories are among the reasons why you may want to choose carefully.
Can you train yourself to have better visual memory?
A TV program demonstrates our minds’ limitations — and how to mitigate them.
What are the benefits of sharing a medical appointment?
A magazine article looks at SMAs. Also: An encyclopedic, updated guide for caring for aging parents.
If you have celiac disease, quinoa turns out to be okay
Lab tests had raised the possibility of a potential problem. But a new study says the grain is fine.
Kaiser Health News
AnyBODY
Are popular green drinks as healthful as you think?
Some of them, yes. But others are more a glorified dessert, experts say. Be careful what you put in them.
Smoothie recipe has calcium, protein, vitamins, minerals
Ingredients include leafy greens and a banana.
Are computer screens worse for your eyes than print?
Yes and no. Your eyes may get more dry and tired, but you can make adjustments to help.
How & Why/EcoLOGIC
Unlocking the secrets of amber
How do living things become encased in these golden tombs? Can they be revived?
Is Rainbow Loom harmful to the environment?
Those little synthetic rubber bands, if not discarded properly, can hurt small animals.
Urban Jungle
The cardinal and the tuliptree
As winter advances, choice foods become scarce and eating grows riskier and less efficient.
Medical Mysteries
Intractable depression — or something else?
Drugs and shock treatments failed to treat a woman’s worsening mental illness.
Health, Science & Environment Videos
Obamacare's silver lining?
For all of the issues surrounding the rollout of the President's signature health care law, one part seems to be working pretty well—the expansion of Medicaid. Close to 400,000 Americas have learned they are now eligible to enroll, but some states haven't embraced the expansion.
Can a November surge help Obamacare?
The Affordable Care Act saw a surge in the month of November with 173,000 people signing up in their state-run marketplaces. But will young people sign up in the numbers needed to support the program?
Three Obamacare fixes explained
Wonkblog’s Sarah Kliff breaks down three proposals that would help Obama make good on his promise.
Do Americans think the government can recover from Obamacare's disastrous rollout, or is it too late?
Kliff Notes: How did Obamacare change?
Wonkblog's Sarah Kliff explains how Obamacare is changing after many insurance policies were canceled, and how the president plans to un-cancel some of them.
Kliff Notes: Will Obamacare cancel my plan?
Wonkblog's Sarah Kliff explains why a lot of people's health insurance policies might get cancelled.
Kliff Notes: HealthCare.gov's 3 problems
Wonkblog's Sarah Kliff walks through the three main problems bogging down the Affordable Care Act's online marketplace.
Kliff Notes: Obama's health care speech
Wonkblog's Sarah Kliff shares her "Kliff Notes" for President Obama's remarks defending his signature health care law.
Obamacare Q&A: Are all marketplaces created equal?
Wonkblog's Sarah Kliff explains why the Affordable Care Act's health insurance marketplaces are different from state to state.
Obamacare Q&A: Who doesn't have to enroll?
Wonkblog's Sarah Kliff explains the exceptions to the Affordable Care Act's individual mandate.The Post Most: National
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Life after Jan. 1: Kentucky clinic offers early glimpse at realities of health-care law -
2Galen Guengerich: 'Selfie' culture promotes a degraded worldview
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In rural Georgia, federal health insurance marketplace proves unaffordable to many -
4Waiting for the dogs during police traffic stops
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5N.Y. man arrested for alleged threat against Bush
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Carolyn Hax
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My girlfriend expects a proposal. I’m not ready for marriage to end my carefree, irresponsible youth.