Beaver? Otter? Muskrat? A Field Guide to Freshwater Mammals

Beaver? Otter? Muskrat? A Field Guide to Freshwater Mammals

Conservation efforts have greatly benefited species like beavers and river otters, so you have a great chance of seeing these in many parts of the United States and Canada.

The Mountain Beaver That Is Not A Beaver

The Mountain Beaver That Is Not A Beaver

© Jon Hall / Samantha Hopkins has been studying mountain beaver evolution for years, working and living in their habitat.“Most people don’t know there are these little brown loafs living in forested tunnels and eating ferns,” says Hopkins, a professor of earth sciences at the University of Oregon.

Super Slow Computer Programs Reveal Math's Fundamental Limits

Super Slow Computer Programs Reveal Math's Fundamental Limits

The busy beaver game asks: Given a certain number of rules, what’s the maximum number of steps that a Turing machine can take before halting.Of 6,561 possible machines with two rules, the one that runs the longest—six steps—before halting is the busy beaver.

Tundra-Trailblazing Beavers Shaped How We Coexist

Tundra-Trailblazing Beavers Shaped How We Coexist

Hard, heavy stuff could be passed down through generations, where light, ephemeral stuff was best used for far and wide proselytizing.Because the parties to the fur trade mimicked, and pushed, one another forward—beavers imitated the damming styles of humans, humans dressed as beavers, animal and human cultures fought and fused—their ways of communicating evolved rapidly.The beavers inspired a media theory that oral, print, and digital media are always biased.Innis’ germinal work inspired the so-called Toronto School, which helped shape the McLuhan Centre for Culture and Technology, named for Innis’ most famous protégé, Marshall McLuhan.