http://www.bbc.co.uk/news/science-environment-24429621Scientists have reportedly made a significant breakthrough in the race to build a self-sustaining nuclear fusion reactor.
Nuclear fusion is often cited as a potential 'miracle cure' for Earth's electricity needs. Unlike current fission reactors, which use rare unstable elements to split atoms and release large amounts of energy, fusion produces even more energy by forcing light and abundant elements together.
This is the same process which powers our Sun - and the hope is that it could lead to a new era of cheap, abundant power on Earth.
But achieving a self-sustaining fusion reaction in which more energy is produced than put in to the system has proven incredibly difficult.
Scientists have worked for decades towards various prototypes, and while progress has been made the dream of a genuine fusion reactor remains elusive.
Until now - maybe. Researchers at the $3.5 billion National Ignition Facility (NIF) in the US appear to have generated more energy in a fusion reaction than was absorbed by the fuel for the first time.
The BBC reports that this would be the first time the milestone had been achieved anywhere in the world.
The NIF system users 192 beams from the world's most powerful laser to heat and compress small amounts of hydrogen. The ultimate aim is to sustain the reaction for long enough that the fuel produces more energy than is poured into it by the lasers.
While this 'ignition' point has not been reached, the milestone is still extremely significant. It would mean than NIF is closer than ever to a genuine fusion reactor.
The lab has not publicly announced details of the test - and indeed the BBC says only that it "understands" the results were achieved. It is still possible that further study will take the shine off the potential breakthrough.
The upcoming Xbox One and 360 shooter features massive, hulking mechs, wall-running soldiers and the most intense multiplayer we've tried all year.
For sheer scale and depth, no upcoming game can match Destiny - the open-world shooter from the minds behind Halo.
The original 'Thief' was one of the classic stealth FPS games, and the reboot due on current and next-gen consoles 25 February looks to be carrying on that fine legacy.
Think GTA V meets George Orwell's 1984, set in Chicago, through the filter of The Matrix.
Mario Kart 8
Nintendo would have to do something astonishing to screw up this instalment of Mario Kart, which so far looks like a riot.
Super Mario 3D World
Yes, it's a Mario game - but it looks like the most interesting, varied and multiplayer-focused in years.
Need For Speed: Rivals
The new NFS takes the open world glory of last year's Most Wanted, and ups the stakes with new levels of customisation and seamless multiplayer.
Super Smash Bros
Sonic fighting Mega Man, the woman from Wii Fitness and the villager from Animal Crossing. What else do you need to know?
Just the most realistic-looking racer we've ever seen.
The PS4 has its stand-out FPS solid-gold hit - and it's the latest Killzone.