Hanging in there: Koalas have low genetic diversity

A species relies on genetic diversity to survive and low diversity usually indicates that there has been inbreeding due to a decrease in population size. By looking at historic mitochondrial DNA (mtDNA) from museum samples, ...

Grandmas made humans live longer

Computer simulations provide new mathematical support for the "grandmother hypothesis" – a famous theory that humans evolved longer adult lifespans than apes because grandmothers helped feed their grandchildren.

Formula unlocks secrets of cauliflower's geometry

The laws that govern how intricate surface patterns, such as those found in the cauliflower, develop over time have been described, for the first time, by a group of European researchers.

Opposite behaviors? Arctic sea ice shrinks, Antarctic grows

The steady and dramatic decline in the sea ice cover of the Arctic Ocean over the last three decades has become a focus of media and public attention. At the opposite end of the Earth, however, something more complex is happening.

Canada senate committee endorses seal cull

Canadian senators on Tuesday endorsed a plan to cull 70,000 grey seals in the southern Gulf of Saint Lawrence in an effort to preserve groundfish stocks.

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