The Government Accountability Office has released a report saying that hospitals have been negligent in securing radioactive materials used to treat cancer patients and posing a risk they fall into the hands of terrorists.
A Russian university says scientists have discovered frozen woolly mammoth fragments that may contain living cells deep in Siberia, bringing closer the possibility of cloning the extinct animal.
After a two-year study, National Research Council strategists have concluded that the nation's protections against missile attack suffer from major shortcomings.
Data from Encyclopedia of DNA Elements, or ENCODE, has been released, and scientists are searching to see what they can learn about disease prevention.
Seven scientists have won prestigious medical awards for development of liver transplantation, discoveries about the inner workings of cells, and leadership in biomedical science.
