Today is the official release day for my book, Nikola Tesla for Kids: His Life, Ideas, and Inventions, with 21 Activities. Woohoo! And it's almost Nikola Tesla's birthday. He was born on the stroke of midnight between July 9 and 10, 1856, although he normally celebrated his birthday on the 10th. Let's see...that would make him 163 years old tonight! Wow! I think even Mr. Tesla would be amazed at all the technological advances we enjoy in this modern age. It's quite mind-boggling when you stop...