Bill Gates has been talking about, and investing his own money, in clean energy for years now. He's been working on global health for a decade. That's about i

Bill Gates has been talking about, and investing his own money, in clean energy for years now. He's been working on global health for a decade. That's about it. Until recently the public at large didn't really care about either so his massive (billions of $$$) investments in both didn't get regular press attention. But this isn't anything new for him, it is all stuff he's been focused on for over a decade.