These infrared photographs taken in Valognes, France, this past November were recently released by Greenpeace International as one part of a larger campaign against nuclear power. The train shown is carrying a container known as a Cask for the Storage and Transport Of Radioactive material (CASTOR), the type of device that has been used to transport nuclear waste between France and Germany for the past 15 years. "High-level waste is in fact hot," nuclear energy and proliferation expert Matthew Bunn told National Geographic's Brian Handwerk. "It doesn't mean anything in particular in terms of how dangerous it is." Still, it looks ominous.
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