Happy July 4 to the Americans reading this. As we eat our cheeseburgers and hot dogs, here’s a robot designed to drill through your blocked arteries, modeled after…the bacteria that causes Lyme disease. The article says it’s about 5 years out, so given my age and health I should be able to start eating all the junk food I want right now, and this technology should be available well before my arteries start to get into serious trouble.