The earth is continually growing older in the eyes of geologists; they now think that it is something like 4.5 billion years old. The paleontologists who study ancient life are also finding proof that living organisms are respectably elderly.
Professors Elso S. Barghoorn of Harvard and Stanley A. Tyler of the University of Wisconsin announced last week that they had found the oldest fossils so far. In a layer of flint beneath an iron ore deposit in Ontario, they identified two kinds of algae, two of fungi and an organism that they believe may be a calcareous (containing calcium) flagellate. None of...
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