Giant tortoises are some of the long-lived species on the planet. Here’s what biologists now understand about one of nature’s most impressive longevity experiments. Giant tortoises are redefining what ...
An experiment to preserve the western swamp tortoise is the latest flash point in a debate over how far humans should go to protect nature as the world warms. By Yan Zhuang Photographs by Matthew ...
DESCRIPTION: The desert tortoise is terrestrial, with an oblong, domed shell and round, elephantine hind legs. Males may be slightly larger than females; average lengths range between six and 14.6 ...
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