Microbes hint at a mechanism behind punctuated evolution

Article Abstract:

Evolutionary biologist Richard Lenski of Michigan State University devised an experiment that allowed him to examine the evolution of a strain of Eschericia coli bacteria over 10,000 generations. Bacterial cell size evolved in sudden spurts, supporting theories of punctuated equilibrium.

Genetic aspects, Escherichia coli, Evolution (Biology), Evolution

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A clearer view of why plants make haze

Article Abstract:

Some plants emit large quantities of hydrocarbons for unknown reasons, which contribute to photochemical smog and ozone formation. Tom Sharkey and Eric Singaas's experiments suggest that emissions of isoprene help protect some plants from exposure to high temperatures.

Plants, Plants (Organisms), Photochemical smog, Haze, Atmospheric haze

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In Hawaii, taking inventory of a biological hot spot

Article Abstract:

A project led by the Bishop Museum is producing a database of the rich variety of species and habitats in Hawaii. The project is the most detailed biological survey yet attempted and has already produced a list of 21,368 species.

Cover Story, Information services, Habitat (Ecology), Biological diversity, Biodiversity, Habitats, Hawaii

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