
Scientists build tiny robots without motors that can fly using sound waves alone
<a href="https://news.google.com/rss/articles/CBMixwFBVV95cUxNSzlmUjZCSjhaMF9hNzlIZlZqYUVoYVBHYmEwYk9VcE9xV1M2Rmg1XzlXWlVtWUU1MUNEd0J3SWdxR2VQbGxrcTVsSFdyWFNKZTdkWmFyT3otdFdIZ3pxMVQwM29ueGJXSlAteUs4NlZDdEwxRFVuaHVoSExQMmhTYmVOZjhhYVdrV293elEwNEZSUGN4WFE5LS1XNHd3SFd3VHhqbEJ0WTNENnhMZW1xSTA4d3RDcjFNOFNHemVPaHJWdl9KMnBn?oc=5" target="_blank">Scientists build tiny robots without motors that can fly using sound waves alone</a>&nbsp;&nbsp;<font color="#6f6f6f">Live Science</font>
