[yc1010]

I keep hearing about Helium 3 mining but do we actually have fusion reactors nowadays (or even in next 10 years) that can use Helium 3?

[jswhitten]

No. We might have fusion power plants within a few decades, but those will use deuterium and tritium as fuels, not Helium-3. Helium-3 fusion has some advantages, but it's more difficult and it might not happen within our lifetime.