Free-roaming horses have existed in Alberta for hundreds of years. Some say they’re a nuisance, while others believe they have their own place in the landscape. In the end, who gets to decide the horses’ fate?

Plus: Arctic walnuts from a time long past, how cicada wings are inspiring biomimicry, wild horse digestion and pesticide-tolerant frogs.

Plus: the true history of horses in North America, herring spawning in new waters, and how to protect road-crossing salamanders 

The ultimate goal of vaquero horsemanship is to produce a “finished” horse: an exceptionally responsive animal that is a true partner to its rider

The students’ device will compete at an international innovation competition June 18 to 20