Uncategorized
- Health & Medicine
Poor ventilation in schools may spur TB spread
Researchers found high carbon dioxide levels in South African classrooms, suggesting that poor ventilation may contribute to tuberculosis transmission.
By Nathan Seppa - Cosmology
Universe re-created in computer simulation
The Illustris Project traces the detailed evolution of the universe starting from 12 million years after the Big Bang.
- Genetics
Organism with artificial DNA alphabet makes its debut
Using DNA molecules other than A, C, G and T, scientists have created the first living organism with an expanded genetic alphabet.
By Beth Mole - Climate
Crop nutrients may drop as carbon dioxide rises
Many staple grains and legumes pack 5 to 10 percent less iron, zinc and protein when grown at carbon dioxide levels expected midcentury.
By Beth Mole - Animals
Woodpecker beaks divulge shock-absorbing properties
Scales, sutures and porosity help the birds hammer without going stupid.
By Susan Milius - Math
The Improbability Principle
The laws of mathematics and physics suffice to explain a world of coincidences, statistician David J. Hand argues.
- Health & Medicine
U.S. patient with MERS virus is on the mend
A man in Indiana does not seem to have spread the potentially deadly respiratory illness.
- Health & Medicine
Massachusetts insurance mandate lowers death rate
Since “Romneycare” was phased in, mortality fell by 2.9 percent.
By Nathan Seppa - Neuroscience
Young blood proven good for old brain
Blood — or one of its protein components — restores some of youth’s vibrancy to elderly mouse brains.
- Health & Medicine
MERS outbreak picks up pace in Middle East
As the number of MERS cases increases, researchers race to learn more about the deadly virus carried by camels.
- Cosmology
See the sky in a different light
An interactive map lets you explore the galaxy with infrared light.
- Animals
Narwhal has the strangest tooth in the sea
Sometimes called the unicorn of the sea, the male narwhal’s tusk is actually a tooth. Narwhals detect changes in water salinity using only these tusks, a new study finds.
By Susan Milius