February 21, 2015
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Editor in Chief Eva Emerson ruminates on the power of knowledge, and the ways scientists are refining how we think about the aging human brain, far away comets and even the speed of light.
Animals live in a world of sounds. Clever experiments are finally teasing out how human-made noise can cause dangerous distractions.
Researchers are beginning to study ways to help adults with autism navigate independently, get jobs and find friendship.
Pockets of iron and nickel in meteorites suggest that asteroids in the early solar system produced magnetic fields for much longer than once thought.
New discoveries peg ritual specialists as force behind bark-paper tomes and wall murals.
The claimed detection of primordial gravitational waves does not hold up after taking into account galactic dust, a new analysis concludes.
Five rocky planets orbit the 11.2-billion-year-old star Kepler 444, suggesting that Earth-sized worlds formed in the early universe.
Earliest snake fossils provide evidence snakes evolved their flexible skulls before their long, limbless bodies.
Fish-hunting cone snails turns insulin into a weapon that drops their prey’s blood sugar and eases capture.
Rosetta finds diverse landscapes on comet 67P, which could provide researchers with clues about how the solar system formed.
South African fossils contain inner signs of humanlike hands, indicating possible tool use nearly 3 million years ago.
A high-speed camera snaps sharp details of how alkali metals explode in water — a classic, but until now, not fully explained chemical reaction.
A newfound set of brain connections appears to control fear memories, a finding that may lead to a better understanding of PTSD and other anxiety disorders.
Even in vacuum conditions, light can move slower than its maximum speed depending on the structure of its pulses.
The environment, especially microbes, shapes immune system reactions more than genes do.
Rapidly spinning black holes can generate turbulence, a new analysis shows.
New find suggests humans mated with Neandertals in Middle East before taking on Europe.
A rise in some bacteria-killing viruses in the intestines may deplete good bacteria and trigger inflammatory bowel diseases.
Engineering E. coli to depend on human-made molecules may keep genetically modified bacteria from escaping into nature.
Aging influences the breakdown of the blood-brain barrier, which may contribute to learning and memory problems later in life.
Carnivorous pitcher plant traps rarely catch much, but their lackadaisical hunting turns out not to be so lame after all.
Over 19 years, geomagnetic fields changed slightly and so did loggerheads’ nesting sites.
Scientists in 1965 measured buildup of radioactive carbon from nuclear bomb testing in people.
Scientists’ share of total employment is lower in United States than in 16 other countries.
Bats get a clue to where dinner is by listening to peers attacking prey.
Reviews & Previews
Dolphins and whales pass cultural knowledge to one another, the authors of a new book argue.
Steven Weinberg’s new book ‘To Explain the World’ illustrates the difficulty of the development of modern science.
Letters to the Editor
Readers ask about Earth's most abundant mineral and discuss the notoriously unpredictable behavior of pedestrians.
The National Park Service mapped noise across the United States.
Teens from 18 states will soon face off in the finals of the 2015 Intel Science Talent Search, the nation’s most prestigious science research competition for high school seniors.