Iran has ordered its nuclear chief to begin enriching uranium. Iran says the enriched uranium will be used in a research reactor, BBC News.
55 nations submitted their plans for reducing carbon emissions this week, New York Times.
U.S. President Barack Obama released his proposed 2011 budget. One of the cuts will scrap plans by NASA to sends humans back to the moon by 2020, CNN.
The British medical journal, The Lancet, retracted publication of a 1998 study that suggested the measles, mumps, and rubella vaccine was linked to autism, Boston Herald.