Untangling the branches in the mammal tree of life

The mammal tree of life is a real leaner. Some branches are weighed down with thousands of species—we're looking at you, rodents and bats—while others hold just a few species.

Study tracks genomic changes that reinforce darter speciation

When they share habitat, orangethroat and rainbow darters tend to avoid one another, even though they are closely related and can produce "hybrid" offspring. The males compete with males of their own species and will almost ...

Rediscovering Saskatchewan's scientific heritage

Gathered together from every corner of the University of Saskatchewan (USask) Department of Physics and Engineering Physics, the unique collection of scientific artifacts fills two rooms in the Physics Building.

Brazil looks to break from US-centric Internet (Update 2)

Brazil plans to divorce itself from the U.S.-centric Internet over Washington's widespread online spying, a move that many experts fear will be a potentially dangerous first step toward fracturing a global network built with ...

Salamanders spell out evolution in action

Lungless salamanders (Ensatina eschscholtzii) live in a horseshoe-shape region in California (a 'ring') which circles around the central valley. The species is an example of evolution in action because, while neighboring ...

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