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Colorado has unveiled an incredible feat of engineering: the world's largest wildlife crossing! This massive overpass, known as the Monument Crossing, is designed to safely connect fragmented habitats and allow animals to roam freely under busy highways.

On the latest Tech & Science Daily podcast, we speak with Kara Van Hoose from Colorado Parks and Wildlife to delve into the reasons behind this ambitious project. The crossing, located near the town of Rifle, addresses a critical issue - the impact of roads on wildlife populations. Highway 6 serves as a significant barrier for animals like deer, elk, moose, and even smaller creatures, leading to increased roadkill and hindering genetic diversity.

Why Build a Wildlife Bridge?

The Monument Crossing isn't just a bridge; it's a carefully designed ecosystem. Spanning over 81 acres (approximately 32.5 hectares), it’s roughly the size of 10 football fields! It’s built with natural vegetation and landscaping to mimic the surrounding environment, making it appealing and easy for animals to use. The goal is to reduce animal-vehicle collisions, improve wildlife movement, and protect the local ecosystem.

The Science Behind the Design

Kara explains that the design was informed by years of research and successful smaller-scale wildlife crossings in other parts of the world. The key is to make the crossing feel safe and natural to the animals. Factors like lighting, noise levels, and the types of plants used are all carefully considered to encourage use.

Beyond the Bridge: Zombie Rabbits?

But the podcast doesn't stop at the impressive bridge. We also tackle a bizarre and concerning topic: the mysterious disease affecting cottontail rabbits – often referred to as “zombie rabbits” due to their unsettling behavior. Kara sheds light on this unusual illness, explaining its symptoms, potential causes, and the ongoing efforts to understand and address it. The rabbits exhibit strange neurological symptoms, losing coordination and showing unusual aggression. Scientists are working to determine the exact cause, suspecting a possible infectious agent.

A Model for the Future

The Monument Crossing is a pioneering project that could serve as a model for other states and countries facing similar challenges. It demonstrates a commitment to both human safety and the preservation of wildlife. The success of this crossing will be closely monitored, and the data collected will undoubtedly inform future wildlife conservation efforts. It’s a vital step towards creating a more sustainable and harmonious coexistence between humans and the natural world.