Template:POTD/2007-01-23

nuclear waste has been combined with glass-forming materials, vitrified, and is being poured into a container, after which it will be sealed. The final waste form resembles obsidian and is a non-leaching, durable material that effectively traps the waste inside. The waste can be stored for relatively long periods in this form without concern for air or groundwater contamination.Photo credit: Pacific Northwest National Laboratory