You Can Get Cautiously Excited About This Fusion Power "Breakthrough"

Ah, fusion power. Holy grail of our energy problems. The savior of life on Earth. Our key to the stars. Source of power for Tony Stark's Iron Man. But the only problem is that people have been saying this for many, many years (except the Iron Man bit). Fusion power always seems like it’s just on the horizon before, a few years later, we seem to be back to square one again.
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