News
- Chemistry
Chemical Knot: Scientists assemble legendary symbol by interlocking molecules
Chemists have constructed a molecular version of a Borromean knot.
- Paleontology
Crawling through Time: Fish bones reveal past climate change
The timing of ancient migrations of snakehead fish from the Indian subcontinent into Europe, Asia, and Africa tells scientists about temperature and humidity changes in those locations.
- Animals
Red Sweat: Hippo skin oozes antibiotic sunscreen
The hippo version of sweat, which is red-orange, contains pigments that can block microbial growth and some ultraviolet light.
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Sexing Brains Down and Up: Early aspirin dose hits male rats below the belt
Prenatal exposure to a certain class of drugs, which includes aspirin and acetaminophen, leads to adult sexual difficulties in male rats, raising concerns about the use of such drugs by pregnant women.
- Tech
Groovy Pictures: Extracting sound from images of old audio recordings
To preserve songs and words on antique vinyl records and wax cylinders, a new scanning technique maps their grooves, then simulates a stylus moving along those contours to extract high-quality sound.
- Astronomy
Cosmic Push: X-ray study confirms universe’s dark side
Culling clues from X rays emitted by distant clusters of galaxies, astronomers report new evidence that some mysterious force overcame gravity's tug about 6 billion years ago and ever since has been pushing galaxies apart at an accelerating rate.
- Earth
Big Thaw Coming: Climate change may slam Arctic
If the changes in climate predicted for this century come to pass, the people and creatures of the Arctic will face some of the largest challenges.
- Health & Medicine
Cutting blood supply to kill off fat
Killing the blood vessels that sustain fat tissue causes obese mice to lose weight.
- Chemistry
Strange brew brings inorganic chemicals to life
A mixture of inorganic chemicals spontaneously forms cell-like structures that behave like tiny chemical reactors.
- Health & Medicine
Estrogen loss induces lung disease in mice
Estrogen loss hampers lung function in mice by sabotaging the alveoli, the tiny sacs that deliver oxygen-rich air to the bloodstream.
- Astronomy
Live! Venus’ transit on the Web
On June 8, astronomers in Europe plan to Webcast observations of the transit of Venus, the first time the planet has passed across the face of the sun as seen from Earth in 122 years.
- Health & Medicine
Folate enrichment pays baby dividends
The federally mandated fortification of grain-based foods with folic acid has led to a 25 percent drop in the rate of potentially life-threatening neural tube birth defects.
