Johnson has been fascinated with turning his age back to 18 years old. A 45-year-old man claims that his "biohacking" effort has given him the heart of a 37-year-old and the lung function of an 18-year-old after extensive exercise and a pricey routine.
SAN FRANCISCO - Late last month, a group of unknown South Korean researchers claimed to have found one of science's holy grails - a material capable of conducting electricity without losing any energy that was stable at room temperature. Grainy videos of a small floating rock - one of the signature signs that a material may have superconducting properties - ricocheted around the internet. A hubbub immediately erupted in Silicon Valley, where investors, tech executives and entrepreneurs - still h