Astronomers say NGC 6744 - a beautiful spiral galaxy - is a twin to our home galaxy, the Milky Way. If so, we must have a similarly lovely home in space.
The International Agency for Research on Cancer has placed cellphones on a list of possibly carcinogenic items, also including coffee, car exhaust and night shift work.
American scientist Stephen Carpenter won the 2011 Stockholm Water Prize for improving the state of the world's water resources. His focus - freshwater lakes.
A study of more than 10,000 mother–child pairs found that breastfeeding children for 4 months or more resulted in better parent-reported behavior at age 5 years.