The remains of Leonardo da Vinci are to be exhumed by a group of scientists who plan to reconstruct his face to discover whether his famed masterpiece, the Mona Lisa, is a self-portrait in disguise.  A team of art historians and scientists from Italy's National Committee for Cultural Heritage, has requested that his tomb at Amboise Castle in the Loire valley be opened. Anthropologist Giorgio Gruppioni, hopes the project will throw new light

Yann Arthus-Bertrand is perhaps the best known aerial photographer on the planet. He has sold more than 3 million copies worldwide of his seminal photo essay Earth From Above, a decade-spanning attempt to photograph all the vistas of the planet from the sky, whether by helicopter, hot air balloon, or anything else that flies.

His newest project takes a different view -- focusing more closely on the people who live on this planet. Called 6 Billion Others, the project was a centerpiece of Pangea Day 2008.