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According to Colorado Parks and Wildlife, the second biggest threat to biodiversity is invasive species preceded only by habitat loss. Invasive plants are spread by natural forces, like wind and wildfire, and largely in part, by unknowing humans. Reporter Lily Jones has more to the story.

Across the West, the increasing prevalence of invasive plants, and the growing influence of climate change, is changing the relationship between vast rangelands, drought, and wildfire.

Wildfire is a continual threat in the West, but researchers say an invasive species of grass that’s taking hold in states like Colorado, Wyoming, Nevada...

A new species of tumbleweed is more vigorous and invasive than ones we've seen in the past. Its range could spread throughout the Mountain West.

According to the Western Governors Association, species like the Canada thistle and common carp aren’t just nuisances -- they’re a matter of western…

In an open field in Longmont, Colorado, about a dozen people crouched in the tall grass, moving slowly and deliberately through mud that squelched…

The tamarisk plant, also called saltcedar, is infesting waterways across the West. The scaly-leafed shrub can grow taller than a person. It sucks up a lot…