Philadelphia Scientists Discover New, Supermassive Dinosaur 'Dreadnoughtus'Scientists in Philadelphia unveiled details about a new dinosaur species. It's believed to be among the largest land animals that ever lived.
Artists And Scientists Help To Restore A 17th Century Italian PaintingArtists, scientists and others are helping to clean and restore a 17th century Italian painting.
American Chemical Society Opens Meeting in PhiladelphiaThousands of scientists, researchers, entrepreneurs and inventors from across the country and around the world are converging in Philadelphia for a national meeting that is the city's largest convention of the summer.