Summer Storms to Create New Ozone Holes as Earth Warms?

Publication: National Geographic News   Date: July 26, 2012   View Article

Summer storms may create new holes in our protective ozone layer as Earth heats up—bringing increased solar ultraviolet radiation to densely populated areas, a new study says.

What’s more, if more sunlight reaches Earth, skin cancer could become the new marquee risk of global warming.

Liposuction Fat Turned Into Stem Cells, Study Says

Publication: National Geographic News   Date: September 8, 2009   View Article

Using leftovers from liposuction patients, scientists have turned human fat into stem cells, a new study says.

The new method is much more efficient than a previous practice that used skin cells, researchers say.

Dinosaur Slime Sparks Debate Over Soft-Tissue Finds

Publication: National Geographic News   Date: July 30, 2008   View Article

Soft tissue recently found in 68-million-year-old Tyrannosaurus rex bones is actually modern-era bacterial slime, scientists say, challenging what some call one of the most remarkable paleontology findings of the 21st century.

“Dinosaur Mummy” Found; Has Intact Skin, Tissue

Publication: National Geographic News   Date: December 3, 2007   View Article

Scientists today announced the discovery of an extraordinarily preserved “dinosaur mummy” with much of its tissues and bones still encased in an uncollapsed envelope of skin.

Preliminary studies of the 67-million-year-old hadrosaur, named Dakota, are already altering theories of what the ancient creatures’ skin looked like and how quickly they moved, project researchers say.

Chameleons Say It With Color

Publication: National Geographic News   Date: September 26, 2005   View Article

Chameleons are famous for their ability to change their skin color to blend in with their surroundings. But experts say camouflage is only half the story of the tropical lizard’s remarkable trait.

“Communication is also partly the function of coloration,” Christopher Raxworthy, associate curator of herpetology at the American Museum of Natural History in New York, wrote in an e-mail interview.

Stem Cell Breakthrough: No More Need to Destroy Embryos?

Publication: National Geographic News   Date: August 23, 2005   View Article

Scientists have turned an ordinary skin cell into what appears to be an embryonic stem cell. The process may eventually eliminate the controversial step of destroying human embryos for stem cell research.

The new technique involves fusing a skin cell with an existing, laboratory-grown embryonic stem cell. The fused, or hybrid, cell is “reprogrammed” to its embryonic state, Harvard University scientists report in the journal Science.

Document “Fingerprints” Could Fight ID Fraud

Publication: National Geographic News   Date: July 27, 2005   View Article

Office supplies have fingerprints, too, it seems.

A laser-based technology can read and record the unique “fingerprint” found in every piece of paper, cardboard, and plastic.

Scientists say the new tech offers an array of applications, from thwarting forged IDs and prescription drug packages to preventing identity theft and combating terrorism.

© 2008-2010 Collected Writings By John Roach