Chronically understudied, fences hold grave ecological threats

Fences are one of humanity's most frequent landscape alterations, with their combined length exceeding even that of roads by an order of magnitude. Despite their ubiquity, they have received far less research scrutiny than ...

Declaration of a climate emergency and next steps for action

Scientific consensus on the threat of climate change is well established, reaching back 40 years to the First World Climate Conference, held in Geneva in 1979. Over the ensuing decades, attendees of similar assemblies have ...

Reining in the ecological effects of free-roaming horses

Free-roaming horses are an icon of the American West, frequently appearing in art and media as exemplars of the spirited freedom that underlies the region's folklore. Viewed through an ecological lens, however, these animals ...

Monitoring species: Are we looking long enough?

The conservation of animals relies heavily on estimates of their numbers. Without knowing how many individuals there are, it is impossible to know whether a population is thriving or dying out—and whether conservation efforts ...

The redomestication of wolves

On landscapes around the world, environmental change is bringing people and large carnivores together—but the union is not without its problems. Human-wildlife conflict is on the rise as development continues unabated and ...

Hydropeaking extirpates river insects

Hydropower produces 19% of the world's electricity—far more than all other renewable sources combined. In the face of mounting climate-change effects, the rush to this profuse energy source is expected to continue. However, ...

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