You are viewing a single comment's thread from:RE: 2# Inventions That Changed The World - Nikola Tesla : ( X-Ray ✴ Laser )View the full contextkid4life (68)in #inventions • 7 years ago https://steemit.com/contest/@kid4life/3-talent-challenge-steemit-vote-for-your-favorite-one-and-decide-who-will-win-the-usdusdusd