Sexing fossils: a boy named Lucy?

Article Abstract:

Martin Hausler and Peter Schmid challenge the commonly accepted description of Lucy as a female of a sexually dimorphic species. They conclude that Lucy's pelvis was not wide enough to give birth to Australopithecus afarensis babies, and that she was a male and/or of a separate species.

Prehistoric peoples, Sex differences

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New skeleton gives path from trees to ground an odd turn

Article Abstract:

Researchers have discovered that the body proportions of Australopithecus africanus were more apelike than its presumed ancestor Australopithecus afarensis. The finding suggests that the evolution from apes to human beings did not proceed in a straight line.

Human evolution

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Are algae - not coral - reefs' master builders?

Article Abstract:

Research indicates that symbiotic algae may play a larger role than previously believed in the production of coral reefs. One study found that zooanthellae repress the calcification rates of coral at night, when there is no light for photosynthesis.

Cover Story, Symbiosis, Calcification, Coral reefs and islands, Coral reefs, Corals, Marine algae

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