Reading this on a mobile device? Try our optimized mobile version here:

September 24, 2012
Sign upForwardArchiveAdvertise
Your World of Science News

  Top Story 
  • African tribe is successor of earliest human genetic split
    Southern Africa's Khoe-San people are successors of the earliest genetic split found in living humans, according to a study by an international team of scientists. They found that the diversification event happened around 100,000 years ago, way before modern humans migrated from Africa, says researcher Carina Schlebusch of Sweden's Uppsala University. (9/21) LinkedInFacebookTwitterEmail this Story
  Science in the News 
  • NASA spacecraft discovers evidence of water in Vesta
    NASA's Dawn spacecraft has discovered evidence suggesting that water-rich and smaller asteroids implanted themselves on the surface of Vesta, a massive body in the solar system's asteroid belt. Dawn found that the water was retained in the rock's hydrated minerals until succeeding impacts produced sufficient heat to melt it and release the water as a gas, causing pitted vents on Vesta's surface. Nature (9/20) LinkedInFacebookTwitterEmail this Story
  • Scientists tap coronal cavities to understand coronal mass ejections
    Scientists are looking at the coronal cavities in the outer atmosphere of the sun, using observations from different spacecraft such as NASA's twin Solar Terrestrial Relations Observatory, to characterize and explain coronal mass ejections. The cavities act as launch pads for CMEs, or solar plasma clouds. Learning CMEs' roots is important to solar researchers since these can disrupt power grids, satellite navigation and radio communications. (9/20) LinkedInFacebookTwitterEmail this Story
  • Nanotubes show promise in boosting drug delivery, study says
    Flexible self-assembled nanotubes that are composed of macromolecules, which are hydrophilic on one side and hydrophobic on the other, show promise in targeting treatments to specific body parts while limiting side effects, according to a study in the journal Science. Researchers incorporated light-sensitive fullerene molecules -- which have been used in anti-cancer therapy -- in the nanotubes. They also found that the nanotubules respond to changing temperature by contracting and expanding. The Scientist online (9/20) LinkedInFacebookTwitterEmail this Story
  • Carbon nanotubes guide stem cells to become cardiac progenitor cells
    Irish researchers used electrically stimulated carbon nanotubes to create cells that function like cardiac progenitor cells. "This is a totally new approach and provides a ready source of tailored cells, which have the potential to be used as a new clinical therapy," said researcher Valerie Barron of the Regenerative Medicine Institute at the National University of Ireland Galway. The findings were published in the journals Biomaterials and Macromolecular Bioscience. MTB Europe (9/19) LinkedInFacebookTwitterEmail this Story
  • Artificial enzyme technique allows changing of zebrafish DNA
    Artificial transcription activator-like effector nucleases could be used to make custom changes to parts of the genome of zebrafish, according to a study in the journal Nature. Researchers inserted several sequences into the zebrafish DNA including one that enables genes to be turned on and off. They expect the method to make model organisms more helpful in studying treatments for human diseases. Nature (9/23) LinkedInFacebookTwitterEmail this Story
  Funding Watch 
  • Study on how breast cancer spreads wins $1.5M grant
    The National Cancer Institute awarded Eran Andrechek, an assistant professor at Michigan State University, a $1.5 million grant to study the role of gene expression in the spread of HER2 breast cancers. Through bioinformatics methods, Andrechek's team already showed that the E2F transcription factors are active in HER2 breast cancer, and when it is inactive, the cancer is less likely to spread. "Since drugs such as Herceptin are only effective in 50 percent of HER2 patients, we need to know if the E2F gene is responsible for that," Andrechek said. "Given the survival differences within patients with HER2 breast cancer, there is a compelling need to understand the genetic makeup of those tumors." GenomeWeb Daily News (free registration) (9/21) LinkedInFacebookTwitterEmail this Story
  Featured Content 

There are a thousand hacking at the branches of evil to one who is striking at the root."
--Henry David Thoreau,
American author and poet

LinkedInFacebookTwitterEmail this Story

Subscriber Tools
Print friendly format  | Web version  | Search past news  | Archive  | Privacy policy

Account Director:   Tom Sikes   212-450-1694
 Recent Sigma Xi SmartBrief Issues:   Lead Editor:   Bryan McBournie
Mailing Address:
SmartBrief, Inc.®, 555 11th ST NW, Suite 600, Washington, DC 20004
© 1999-2012 SmartBrief, Inc.®  Legal Information