Here we go again. This is why science fiction writers keep having to up their game. Here's a few things that are now seriously in discussion and development that, you know, belong to science fiction:
1. Power sats. Four countries - the US, China, India and, of course, Japan have projects in development. SpaceX's reusable rockets could be key to bringing the project into economic feasibility - the number of launches required could give the first one a price tag of $20 billion.
2. Self-guilding bullets. DARPA claims they've cracked this one. Of course, being DARPA, they won't go into details as to how, but with modern miniaturization the bottom size of a guided missile has to have dropped a lot.
3. Mind over machine. Mind-controlled robotic arms are close to being ready for primetime. And machine-mediated telepathy's on the way too.
What do we think will be 2015's breakthrough?