Dr. Wu Lien-teh invented an early form of the filtered surgical mask in 1910. Credit: google In its latest homepage Doodle, Google celebrates what would be the 142nd birthday of Dr. Wu Lien-teh ...

April 22 (UPI) --Google is celebrating Earth Day with a new Doodle. Each letter of the search engine was replaced with Google Earth aerial shots. An image from the Maldives resembles the "G ...