Uncategorized
- Animals
Social pecking order gives roosters something to crow about
Small groups of laboratory roosters keep to the rankings for orderly morning crows.
- Space
Best cosmic ‘cradles of life’ may be elliptical in shape
Giant elliptical galaxies might harbor up to 10,000 times as many Earthlike planets than galaxies like the Milky Way.
- Materials Science
Stretchy fiber lets electrons flow
Folded layers of carbon nanotubes allow an elastic fiber to conduct electrical current when stretched.
- Astronomy
Kepler telescope identifies new ‘habitable zone’ planet
A new analysis of data from NASA’s Kepler mission has uncovered a planet orbiting a sunlike star that could be Earth’s “cousin.”
- Planetary Science
First craters on Mars spotted 50 years ago
Fifty years ago, Mariner 4 revealed that the Red Planet was peppered with craters. Now we know pockmarks are common on many other planets and moons, too.
- Paleontology
Sudden heat spikes did in Ice Age’s mammoth mammals
Abrupt warming and excessive hunting by ancient humans were responsible for the disappearance of many large mammals, including woolly mammoths, during Earth’s last glacial period.
- Paleontology
Museum fossil links snakes to lizards
Scientists have discovered the fossilized remains of the first four-legged snake. The fossil bridges the gap between snakes and lizards.
- Life
Cells from grandma help keep fetus safe
Grandmother’s cells may watch over grandchildren in the womb.
- Environment
Fracking doesn’t always go to great depths
Fracking at shallow depths is unexpectedly common in the United States and raises new concern for drinking water contamination.
- Neuroscience
Boosting estrogen, only in the brain
Scientists have developed a chemical that transforms into the hormone estrogen in the brain, but not the body, of rats.
- Health & Medicine
Bystanders deliver on CPR
People suffering from cardiac arrest are more likely to survive without brain damage if a bystander performs CPR, new studies suggest.
- Genetics
Research teams duel over Native American origins
Genetic link between Australia and the Amazon fuels two interpretations of Native American origins.
