News
- Life
For blood stem cells, the force is strong
Blood flow boosts production of blood stem cells, two new studies show.
- Space
Cosmic dustup settles
Two new studies document how crystalline dust forms in the hot, inner part of a young star’s planet-making disk and then gets incorporated into the cold, comet-forming region billions of kilometers away.
- Chemistry
How RNA got started
Scientists identify chemical reactions that could be responsible for the origin of life.
- Chemistry
Nonstick chemical pollutes water at notable levels
Residues of nonstick chemicals — from unknown sources — appear to be approaching concentrations associated with adverse effects in laboratory animals.
- Health & Medicine
Toothpicks match needles for acupuncture
Sham acupuncture works as well as the real thing for back pain, a study shows.
- Humans
Intel International Science and Engineering Fair kicks off
Young scientists descend on Reno in hopes of winning scholarships and other prizes.
- Space
Final Hubble repair mission begins
The final mission to repair and upgrade the Hubble Space Telescope lifted off May 11.
- Life
Misread epigenetic signals play role in leukemia
A genetic mistake causes misinterpretation of epigenetic marks, leading to cancer.
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- Animals
Controversial polar bear rule stands
Creature’s plight remains separate from decisions on greenhouse gas emissions.
- Humans
Science receives a budget bonanza
Obama's budget blueprint for fiscal year 2010 delivers large research and development increases, although some rely heavily on the stimulus package, a one-time spending boost.
- Archaeology
Biocides inducing resistance in Lascaux cave’s microbes
Study makes researchers wonder whether they should treat fungus or not.
