Uncategorized
- Life
Aphids support symbionts with borrowed DNA
Aphids borrowed at least two genes from bacterial buddies, and those genes now support another bacterium that lives in the insects.
- Physics
Single top quark detected
Scientists observe elusive single top quark, usually found in pairs.
- Health & Medicine
Early intellectual gap found for kids of older fathers
A reanalysis of data from more than 33,000 U.S. children finds that those with older fathers fared somewhat poorer on intelligence tests than those with younger fathers, regardless of mothers’ ages.
- Health & Medicine
President reverses federal ban on stem cell funding
President Barack Obama signed an executive order lifting a ban on federal funding for research that uses embryonic stem cells.
- Space
Frozen cosmic fingerprints
Researchers claim to find evidence of 11th century supernovas and the solar cycle in an ice core.
- Math
The four color problem gets a sharp new hue
Mathematicians find new answers to the still puzzling theorem that four colors suffice to color any map.
- Climate
Chinese carbon dioxide emissions eclipse efficiency gains
A boost in manufacturing and construction in China led to an increase in carbon dioxide emissions that outstripped any gains from increased energy efficiency.
- Earth
Buckyballs do antimicrobial magic
A new study shows that soccer-ball–shaped carbon nanoparticles can prevent biofilm from gunking up water filters.
- Physics
When the ink hits the page
Scientists investigate the physics of the most printable ink and find the most viscous inks don’t make the grade.
- Archaeology
Horse domestication traced to ancient central Asian culture
New lines of evidence indicate that horses were domesticated for riding and milking more than 5,000 years ago by members of a hunter-gatherer culture in northern Kazakhstan.
- Health & Medicine
Chemotherapy drug may in fact strengthen some cancer cells
Research shows a standard drug for treating brain cancer can actually make some cells more aggressive.
- Tech
Watching Earth for 25 years
The Landsat 5 satellite launched in 1984 with a mission to orbit and image Earth's surface for three years. Still in orbit, the satellite has continuously documented changes in landscape.
