National Zoo Panda Tian Tian Gets Checkup For Weight Loss And Sore Shoulder
Veterinarians performed laser treatment and acupuncture for what they initially thought was a touch of arthritis in the panda's left shoulder.
Science
The Largest Digital Camera In The World Takes Shape
A two-story tall, digital camera is taking shape in California. It will ultimately go on a telescope in Chile where it will survey the sky, looking for things that appear suddenly or change over time.
Canadians Root For An Underdog Health Policy Idea From The U.S.
A center created by the Affordable Care Act to foster innovations in health care is at risk in Donald Trump's U.S. But some Canadian health analysts see it as a model for curbing health care's cost.
Keystone Pipeline Oil Spill Reported In South Dakota
The oil leak occurs just a few days before Nebraska state regulators will decide on the fate of TransCanada's controversial sister project, the Keystone XL Pipeline.
Video: An Interspecies Flying Lesson
Gorilla naturalist? Barbara J. King suggests watching this young male gorilla in the Virunga Mountains during his close-up encounter with a baby owl.
Why Did The Passenger Pigeon Go Extinct? The Answer Might Lie In Their Toes
Billions of these birds once flew over North America, but the last known passenger pigeon died in 1914. To try to figure out what happened, scientists analyzed DNA from the toes of birds in museums.
As Climate Negotiators Debate Nations' Pledges, Scientists Worry It's Not Enough
Delegates to the annual international climate meeting held by the U.N. are struggling to forge a unified approach to slowing climate change. Meanwhile, emissions of greenhouse gases keep rising.
WATCH: The Hurricane Season, As Shown By Salt, Smoke And Dust
A NASA visualization uses computer models to show how recent hurricanes shifted salt from the Atlantic, dust from the Sahara and smoke from fires in Portugal and the Pacific Northwest.
From Cattle To Capital: How Agriculture Bred Ancient Inequality
Archaeologists say early civilizations in North and Central America were more egalitarian than the societies of Eurasia — and they think it's because early Americans didn't have cattle or horses.
Hurricane Damage To Manufacturers In Puerto Rico Affects Mainland Hospitals, Too
The island is a major center for drug and medical device manufacturing. After Hurricane Maria, those products, including small IV bags, are running short throughout the U.S.