[Paul Ross]

It could shield a spacecraft from x-rays and gamma rays.

I don't think it is realy shielding the object. It appears it is just not allowing the reflection to be visible. The energy is still there...just diffused and redirected a bit.

[Reaganesque]

The energy is being redirected. Instead of going through the object, it goes around it. At least that’s my understanding of what I’ve read about negative refractive indices.

[muawiyah]

If you fine tune this enough you'll get to the point where you can diffuse and redirect gamma rays and everything else.

That will give us an effective shield system so that travel in outerspace will be possible.

We can also shield Earth from excess or dangerous radiation ~ and that could very well be mistaken for climate control.