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Dorit Hockman is in the Department of Human Biology, Division of Cell Biology, University of Cape Town, Cape Town 7925, South Africa. This theory needs to be tested, but, without travelling back in ...

Mice, rats and pigs all share a secret superpower: They can all use their intestines to breathe, and scientists discovered this by pumping oxygen up the animals' butts. Why run such experiments, you ...

This is a preview. Log in through your library . Abstract Photosynthetic gas exchange and malic acid fluctuations were monitored in 69 well-watered plants from five morphologically similar species of ...