New research shows Roman concrete relied on heat-driven mixing and reactive lime, giving it a surprising self-healing ability ...
More than a billion years ago, in a shallow basin across what is now northern Ontario, a subtropical lake much like ...
More than a billion years ago, in a shallow basin across what is now northern Ontario, a subtropical lake much like ...
Fossils can reveal far more than the shapes of ancient creatures. Molecules preserved inside old animal bones provide clues about past diseases, what those animals ate, and the climates they lived in.
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