Archive for August, 2006

Baby Rats Born From Mice

Publication: National Geographic News   Date: August 30, 2006   View Article

Rat sperm cells grown in mouse testicles have been used to successfully produce healthy baby rats, scientists say.

The research proves a concept first envisioned a decade ago: that functional sperm cells from many types of animals can be produced in small surrogate fathers of a different species.

The finding has implications for species conservation as well as farming and agriculture.

Oil Platforms, Deep Seas, Mined for New Drugs

Publication: National Geographic News   Date: August 25, 2006   View Article

The thousands of oil and gas platforms in the Gulf of Mexico may soon become a source for blockbuster drugs, researchers say.

“They are all very, very rich in organisms” that could provide ingredients for powerful pharmaceuticals, said Lawrence Rouse, the director of the Coastal Marine Institute at Louisiana State University in Baton Rouge.

Quieter Aircraft to Take Cues From Birds, NASA Expert Says

Publication: National Geographic News   Date: August 22, 2006   View Article

Bird-inspired technologies may be the key to dampening aircraft noise around airports, according to a NASA scientist.

“We are learning to make aircraft more like Mother Nature,” said Dennis Huff, chief of the acoustics branch at the NASA Glenn Research Center in Cleveland, Ohio.

Dark Matter Proof Found, Scientists Say

Publication: National Geographic News   Date: August 22, 2006   View Article

A team of researchers has found the first direct proof for the existence of dark matter, the mysterious and almost invisible substance thought to make up almost a quarter of the universe.

Dark matter does not absorb or emit light. So far, astronomers have inferred its presence only indirectly by measuring the effects of its gravity.

But now, by observing a massive collision between two large clusters of galaxies, astronomers have detected what they say could only be the signature of dark matter.

Hobbits Were Pygmy Ancestors, Not New Species, Study Says

Publication: National Geographic News   Date: August 21, 2006   View Article

The “hobbits” that lived on the Indonesian island of Flores until at least 18,000 years ago were not a distinct species of early human, a new analysis of the fossils suggests.

The hobbit remains were first proposed as a new species in 2004 after a single skull and the bones of several individuals were found on Flores.

Artificial Reefs Made With Sunken Subway Cars, Navy Ships

Publication: National Geographic News   Date: August 18, 2006   View Article

Along the Atlantic coast from New Jersey to Georgia, thousands of fish are crammed into subway cars—but they’re going nowhere fast, and recreational fishers couldn’t be happier.

The subway cars, along with armored tanks, naval ships, tugboats, and a large amount of concrete culverts, were strategically dumped in the ocean to serve as artificial reefs.

Hurricanes, Politics, Blowing Florida’s Laborers Away?

Publication: National Geographic News   Date: August 15, 2006   View Article

Florida farmers are concerned that millions of pounds of fruit and vegetables may go unpicked next harvest season because U.S. immigration politics are keeping laborers from their fields.

And if hurricanes wallop the Sunshine State like they did the past two years, the problem could become even worse.

© 2008-2010 Collected Writings By John Roach