By Marisa Taylor and Rachael Levy (Reuters) - Elon Musk's brain implant company Neuralink has approached one of the biggest U.S. neurosurgery centers as a potential clinical trials partner as it prepares to test its devices on humans once regulators allow for it, according to six people familiar with the matter. Neuralink has been developing brain implants since 2016 it hopes will eventually be

A sustainable new rocket propulsion system could prove an alternative theory of inertia.