Ebb and flow of the sea drives world's big extinction events

Space & Earth / Earth Sciences

Jun 15, 2008 | 4.3 / 5 (52) | 4

If you are curious about Earth's periodic mass extinction events such as the sudden demise of the dinosaurs 65 million years ago, you might consider crashing asteroids and sky-darkening super volcanoes as culprits.

Researchers create molecule that nudges nerve stem cells to mature

Biology /

Jun 15, 2008 | 4.9 / 5 (41) | 0

Inspired by a chance discovery during another experiment, researchers at UT Southwestern Medical Center have created a small molecule that stimulates nerve stem cells to begin maturing into nerve cells in culture.

Stem cell researchers give old muscle new pep

Biology /

Jun 15, 2008 | 4.8 / 5 (34) | 0

Old muscle got a shot of youthful vigor in a stem cell experiment by bioengineers at the University of California, Berkeley, setting the path for research on new treatments for age-related degenerative conditions ...

Hunger hormone increases during stress, may have antidepressant effect

Medicine & Health / Research

Jun 15, 2008 | 4.6 / 5 (7) | 0

New research at UT Southwestern Medical Center may explain why some people who are stressed or depressed overeat. While levels of the so-called "hunger hormone" ghrelin are known to increase when a person doesn't eat, findings ...

How Montezuma gets his revenge

Medicine & Health / Research

Jun 15, 2008 | 4.6 / 5 (5) | 0

Every year, about 500 million people worldwide are infected with the parasite that causes dysentery, a global medical burden that among infectious diseases is second only to malaria. In a new study appearing in the June 15 ...

Some patients may not need insulin for long-term control of type 2 diabetes

Medicine & Health / Diseases

Jun 15, 2008 | 3.8 / 5 (4) | 1

Some patients with type 2 diabetes can control their disease for years yet avoid insulin injections by using multiple classes of oral diabetic medications, a new study found. The results were presented Sunday, June 15, at ...

Novel model of osteosarcoma

Medicine & Health / Research

Jun 15, 2008 | 3.5 / 5 (2) | 0

In the June 15th issue of G&D, Dr. Stuart Orkin (HHMI, Dana-Farber Cancer Institute, Children's Hospital Boston) and colleagues present a new mouse model of osteosarcoma.