For more than half a century, the federal Land and Water Conservation Fund has been supporting the purchase of land for public ownership and recreational access. The Appalachian Trail is just one of the beneficiaries. In Colorado, where climate change means less snowmelt and higher temperatures in rivers like the Yampa, residents are determined to do what they can to save the river by cooling it down. Unlike in the past, a young girl’s future role in taking over the family farm in Texas is accepted and welcomed. Scientists study spadefoot toads to learn more about the role of “plasticity” in evolution.

With fast population growth in the Denver area and fierce competition for water, investors are behind a plan to import water from a Colorado mountain valley hundreds of miles away, a plan largely opposed by farmers and ranchers who depend on water in that valley. A mother’s tasks in a Texas farm family shows how the role of women in agriculture is now vitally important in managing the business of farming and using best practices to conserve soil and water.

Another good example of how the Land and Water Conservation Fund enables protection of iconic landscapes nationwide: the Blue Ridge Parkway stretching 469 miles through breathtaking scenery from Virginia to North Carolina. Researchers explore the role of tiny marine animals in the movement of ocean waters.

With fast population growth in the Denver area and fierce competition for water, investors are behind a plan to import water from a Colorado mountain valley hundreds of miles away, a plan largely opposed by farmers and ranchers who depend on water in that valley.

In Colorado, where climate change means less snowmelt and higher temperatures in rivers like the Yampa, residents are determined to do what they can to save the river by cooling it down.

In the Colorado Rockies, residents support a Congressional bill creating new wilderness, wildlife conservation areas, and the nation’s first national historic landscape honoring veterans of the Second World War.

A new agreement with Mexico shares the Colorado River by dedicating water to the environment, restoring flows and habitat along the river and at the Delta.

The nation’s most important conservation and recreational access program has protected areas in almost every state and county, but it could soon expire without action by Congress.

On the Continental Divide in Colorado’s Rocky Mountains, residents support a plan to create new wilderness and wildlife conservation areas, including the nation’s first national historic landscape to honor veterans of the Second World War. In southern Utah, the remote and untamed Escalante River faces a major threat from invasive plants as it winds through spectacular redrock canyons; volunteers chop their way through choking stands of Russian olive to unblock the river and keep it wild and free. A training program in Georgia educates teachers in a new approach to science teaching called 3-D Science – getting teachers and students outside to observe their own surroundings and letting kids’ natural curiosity lead them to learn more.

In Montana, conservationists, landowners, business leaders and government officials consider the importance of the most important yet least-known and understood conservation and access program in the U.S. – the Land and Water Conservation Fund. Farmers in Oklahoma use cover crops and smart pasturing of livestock to reduce their use of chemical fertilizers, improve water quality, and increase their bottom line. Researchers are finding useful purposes for recycled urine.

From recent episodes of THIS AMERICAN LAND, these brief summaries of stories highlight major repair and maintenance issues affecting America’s national parks.