You can change your gmail layout/ add new widgets by entering into the settings> labs and Enable the feature you want to use with your mail. suppose if you enable the feature 'YouTube preview in mail' you can watch that video right from your mail.
Researchers from Harvard School of Engineering and Applied Sciences shown the first controlled flight of Robotic insects. They are half the size of a paper clip, weighing less than a tenth of a gram, the robot was inspired by the biology of a fly, with submillimeter-scale anatomy and two wafer-thin wings that flap almost invisibly 120 times per second.