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This post is part of the Science Tuesday feature series on the USDA blog. Check back each week as we showcase stories and news from USDA's rich science and research portfolio.

A man in Arizona threw away an extension cord – and that’s a big deal for some folks who live about 100 miles west of Tucson.

The 48 families who live in the Pisinemo District of the Tohono O’odham Nation reside in an area so remote that some had to get their power by stringing extension cords to a neighbor’s house. Now, however, they have new solar panels to provide electricity for heating, cooling, and cooking.

What do Tristan Reader of Tohono O’odham Community Action (TOCA), Amy Bacigalupo of the Land Stewardship Project in Minnesota, Haile Johnston of Common Market in Philadelphia and Michael Todd’s environmental studies class at Ames High School in Ames, IA have in common? They’re all building connections between farms and consumers and creating strong local food systems in their communities.  And all joined me for a Google+ Hangout – a live, virtual panel – on Thursday, November 21 to discuss their work.

There is amazing energy surrounding the development of local food systems in communities nationwide, and our discussion certainly reflected that. But it also came at a time of uncertainty. Congress has yet to pass a Food, Farm and Jobs bill, the major piece of legislation funding USDA’s local food efforts (along with many other critical programs). Until a bill is passed, many of the key resources for producers, businesses and communities engaged in local food systems are without funding. That reality lent a sense of urgency to some of the topics we discussed.

More than 300 people gathered on in 25-degree weather to witness the harvesting of the 88-foot 2013 Capitol Christmas Tree from the Colville National Forest, the first step in its 5,000 mile journey from Washington State to the U. S. Capitol in Washington, D.C.

More than a dozen spotters and equipment operators manipulated the tree into position as the Mack Truck pushed the trailer underneath. The enormity of the Engelmann spruce became apparent as the tree floated above the trailer while a few extra feet from the trunk had to be removed.

Every December, the Speaker of the House hosts a lighting ceremony on the U.S. Capitol grounds. With a simple flip of a switch roughly 10,000 lights bring the tree to life. But first it has to make the journey.

When students have experiences such as tending a school garden or visiting a farm they’ll be more likely to make healthy choices in the cafeteria. And when schools invest their food dollars in their local communities, all of agriculture benefits, including local farmers, ranchers, fishermen, food processors and manufacturers.

Good news: these healthy habits are taking root all across the country.

USDA released today results from a nationwide Census of farm to school activities. We found that 43 percent of all public school districts have an existing farm to school program in place. Another 13 percent of school districts surveyed are committed to launching a farm to school program in the near future. With purchasing local food as a primary farm to school activity, in school year 2011-2012, schools purchased and served over $350 million in local food.

Travel 30 miles south of Alfredo and Sabrina Zamora’s farm in Cochise County, Ariz., and the imposing border fence between the U.S. and Mexico rises up across the horizon. This border county is rural, arid, open land where the Zamoras have spent their lives farming.

The couple is well known in the area for their cotton, pecans and alfalfa crops and they are no strangers at the local USDA Natural Resources Conservation Service office in Douglas. They’ve worked with NRCS over the years to plan out and implement conservation on their farm, including more efficient water and irrigation practices, the use of crop residue to improve soil health and the reduction of soil erosion.

Grasshoppers and Mormon crickets of the West beware: R. Nelson Foster, of the Animal and Plant Health Inspection Service, is roaming the rangelands looking for you, and when he finds you, he’ll stop your feeding frenzy right in its tracks.

Foster serves as Assistant Laboratory Director at APHIS’ Center for Plant Health Science and Technology in Phoenix, Arizona. For over forty years, he has worked in the lab and in the field conducting groundbreaking research mainly on grasshoppers and similar insects such as Mormon crickets.

Two chapters of the Navajo Nation in Utah are getting new livestock wells, thanks to USDA’s Natural Resources Conservation Service.

Members of the Teec Nos Pos and Red Mesa Chapters use wells drilled deep into the desert floor to water their 1,000 or so cattle. (A chapter is both a rural community and a unit of local government in the Navajo Nation.) But in the 2000s, the Navajo Nation Water Code Administration found, through testing, that these wells had high levels of arsenic, uranium and E. coli, rendering them non-potable for both humans and livestock.

Sorry Mr. Wolfe. As it turns out, you actually CAN go home again…and John Padalino recently did.

Padalino is the Administrator for the USDA Rural Utilities Service (RUS), a branch of USDA Rural Development. Born in south Tucson, Padalino grew up along the border where his father was a customs agent. Recently he was back in Tucson to facilitate a Rural Development Energy Round Table.

The round table was filled to capacity with participants that represented small businesses, solar companies, utilities, community action groups, tribes, contractors, and local governments.

As rural communities search for new and viable economic approaches, it is becoming clear that one core component of many successful rural communities is the presence of vibrant arts and cultural opportunities. Last month I had the opportunity to speak about rural arts initiatives and how USDA Rural Development is engaged with local communities and private foundations to provide awareness of our infrastructure programs and how they can assist in supporting local cultural strategies.

At the Americans for the Arts annual meeting I had the honor of representing USDA on two panels where our Rural Development programs were part of the mix.  The sessions included discussion of ArtPlace, a consortium of national and regional foundations, and their efforts to support rural communities. Projects in Lanesboro, Minnesota and Ajo, Arizona are recent ArtPlace grantees, and we had the opportunity to explore ways in which USDA’s infrastructure programs might be able to leverage this new boost of philanthropic support as these communities work to demonstrate how cultural development is an essential ingredient for rural communities in the next generation.

Betty and Kee Acothley live miles off the beaten track in the former Bennett Freeze area on the Navajo Nation.

Kee once tended thousands of head of sheep at the remote sheep camp he and his wife Betty call home. Now, at 80, he keeps only around 70 head. He and Betty, 79, follow the sheep on foot every day, returning to their modest home before dusk.