Science News

Science newspaper is a magazine specializing in Science topics.

Articles from Vol. 162, No. 17, October 26

A New Population Shows Up in the Milky Way. (Cloudy Findings)
A radio telescope has detected hundreds of hydrogen clouds in the gaseous halo that surrounds the disk of our galaxy. This previously unknown population may have been lofted into the halo by a galactic fountain--powerful winds from supernova explosions...
Early Americans Followed the Water. (Ancient Lure of the Lakes)
After living for nearly 2 millennia in Chile's lowland jungles, South American settlers first braved the region's Atacama Desert around 13,000 years ago. Modern archaeologists would like to know why. New evidence may explain this puzzling migration...
Growth Signal Shifts Cord Stem Cells into High Gear. (Blood Booster)
Once considered a waste product of birth, umbilical cord blood is now prized as a source of stem cells that can replace the diseased bone marrow of people with leukemia and other illnesses. Unfortunately, umbilical cords often don't contain enough...
Little-Studied Metal Goes Critical. (Neptunium Nukes?)
Scientists first created the artificial element neptunium in 1940, around the time they made the first atoms of plutonium. But because plutonium turned out to be so much better for nuclear weapons, researchers have paid scant attention to neptunium....
Mediterranean Endures Emissions from Afar. (Air-Pollution Pileup)
Most Mediterranean countries aren't big polluters. A new survey suggests, however, that the area is a crossroads for pollution-carrying air currents from Europe, Asia, and North America. According to an international team of 31 atmospheric chemists,...
Muscles, Not Nerve Cells, Fail in Old Worms. (Outmuscled)
For a tiny worm called Caenorhabditis elegans, it's not the brain that goes in old age; it's the muscles. This millimeter-long nematode, say researchers, may provide insights on why aging people also lose muscle power. Over the past few decades,...
Prime Pursuit: Constructing an Efficient Prime Number Detector
Prime numbers lie at the core of some of the oldest and most perplexing questions in mathematics. Evenly divisible only by themselves and 1, they are the building blocks of integers. In recent decades, prime numbers have emerged from their starring...
Video Turns Fish Story on Its Head. (Upside Way Down)
Oceanographers watching the live video nicknamed the animals "Zappa fish" because of what seemed to be a long, beardlike barb coming off their chin. Jason, a remotely operated vehicle servicing ocean-bottom instruments at the Hawaii-2 Observatory...
Why Turn Red? the Autumn Leaf Is Toast, but It Still Redecorates
A leaf turning red in the fall makes for a much greater mystery than a leaf turning yellow does. The yellowing signals simply a dropping of veils because the yellow pigment has lain hidden in the leaf during its long, green summer. When summer ends...