App Inventor for Android is a free platform to design Applications. You do not need any programming knowledge to design apps because designing goes on visual interface.
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.