In the middle of the Pacific, a concrete dome the size of a football field holds the toxic legacy of Cold War nuclear testing, and scientists are now warning that the structure is edging toward a slow ...

Nuclear waste has become a kind of cultural shorthand for everything people fear about atomic power, from glowing green sludge to warnings that we are burdening distant descendants with our mistakes.

This article is part of a package in collaboration with Forbes on time capsules, preserving information and communicating with the future. Read more from the report. IGNACE, Ontario, C.E. 51,500—Feloo ...