News of the WeekEvolution

Could Poor Nutrition Have Held Life Back?

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Science  16 Aug 2002:
Vol. 297, Issue 5584, pp. 1104-1105
DOI: 10.1126/science.297.5584.1104

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From about 2 billion to 1 billion years ago, the green scum of cyanobacteria and their ilk reigned supreme, changing little from eon to eon. During that long hegemony, our cellular ancestors, the eukaryotes, went nowhere evolutionarily. Why was this? A hypothesis is presented on page 1137 of this issue of Science.