"The famous smile on Leonardo Da Vinci's Mona Lisa could be because she is pregnant or had just had a baby, research suggests. Canadian scientists used laser and infrared scans to produce a 3D image of the painting.
This allowed details beneath layers of paint to be seen - including a gauzy dress then associated with pregnant or new mothers."
(credit: BBC)
"The United Nations address by Venezuelan President Hugo Chavez has had an unexpected impact — on the bestseller lists of Amazon.com and Barnes & Noble.com.
