Number one on clickbank (gravity) is hydrogen fuel, a similar product is also doing extremely well.

This market will keep getting hotter and not just for info products.

You could do an ebook, videos, make a kit and sell it etc and its so topical it would be fodder for press releases and blogs, great to advertise on many websites.

Think about it – hydrogen is not the only alternative – this is riper than the health market at present.