Also, studies on huge rock that hit Russia say it had the energy of 30-plus Hiroshima atomic bombs.
Sandhya Somashekhar and Amy Goldstein
Site will be working smoothly for most consumers by the end of the month, Marilyn Tavenner told the Senate.
The Milky Way galaxy alone could have about 25 billion rocky worlds in “habitable zones” of stars.
More Health and Science news
Lenny Bernstein, Pamela Constable and Jason Samenow
Experts say the speed of Typhoon Haiyan may have spared the island nation from a worse fate.
Some insurers worry that setbacks could make it difficult for customers to purchase their health plans.
Sandhya Somashekhar and Juliet Eilperin
Insurers will be required to treat mental health and substance-abuse issues the same as physical illness.
The heart-clogging ingredient commonly used in processed foods such as frozen pizza remains a “significant public health concern,” the agency says.
A list from the FDA.
Sandhya Somashekhar and Sarah Kliff
The HHS secretary assures Senate panel fixes are being made to HealthCare.gov.
Company agrees to pay $2.2 billion to resolve probe into its marketing of Risperdal, other prescription drugs.
World Cup champion Briana Scurry fights back from the concussion that ended her career, clouded her life.
The winners of the 2013 Nikon Small World competition for microscope photography.
Post Health & Science on Twitter
President Obama apologizes to Americans who are losing their health insurance wapo.st/16MSSvl
Study finds eating less meat and more fish, nuts, fruit and vegetables may make for a healthier old age.
Anna Edney and Bloomberg News
Lori Aratani and Amy Orndorff
Also, a new book relies on common experiences to explain scientific principles.
The problem is a lack of classes specifically for aging men, who are less limber, one reader says.
Kaiser Health News
Yes, studies say, they will test better. But whether being active helps them learn better is still unresolved.
How & Why/EcoLOGIC
Pretty bad. But don’t get all high and mighty about your rake. Your lawn mower isn’t innocent, either.
Urban JungleA bee’s viewBlack-eyed Susans reveal more than meets the human eye.
Health, Science & Environment Videos
Kliff Notes: Will Obamacare cancel my plan?
Sign-up for e-mail newsletters and alerts and get the news you need delivered directly to your inbox.
There are no discussions scheduled today.
I’m focused on one topic of conversation and it’s starting to bore my friends.
© 1996- The Washington Post