News
- Humans
Wildlife trade meeting disappoints marine scientists
The 15th meeting of signatories to the CITES treaty ended on March 25 without passing several proposals to protect high-profile fish species.
- Earth
Alternative flame retardants leach into the environment
Supposedly safer chemicals are spotted in peregrine falcon eggs in California.
-
- Physics
Bar codes could be next to check out
New radio frequency tags would use nanotechnology to identify and track products.
- Health & Medicine
Existing antibiotic might help keep wraps on AIDS virus
The acne drug minocycline inhibits HIV activation in infected immune cells, lab tests show.
- Paleontology
Tyrannosaurs lived in the Southern Hemisphere, too
Australian fossils suggest the kin of T. rex dispersed globally 110 million years ago.
- Chemistry
Building a cheaper catalyst
Using perovskite instead of platinum in catalytic converters could shave many hundreds of dollars off the cost of a diesel car.
- Humans
Ancient DNA suggests new hominid line
Genetic data unveil a previously unknown Stone Age ancestor in central Asia.
- Earth
Bacteria show new route to making oxygen
New discovery adds to the few known biological pathways for making and metabolically using the gas.
- Chemistry
Better sleuthing through chemistry
New fingerprinting method can pinpoint where, when or how a chemical warfare agent came to be.
- Physics
You really can freeze hot water faster than cold*
Experiments suggest that impurities in the warmer water may explain the “Mpemba effect” in which warm water freezes faster than cold water.
- Health & Medicine
UV radiation, not vitamin D, might limit multiple sclerosis symptoms
The rarity of MS in the tropics may be due to higher ultraviolet light exposure, not necessarily increased vitamin production, new research suggests.
