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Nearly 150 years ago – on July 2, 1862, just two months after the creation of the U.S. Department of Agriculture – President Lincoln signed another historic measure, the Morrill Act, which created the land grant university system.

Over the years, land grant colleges and universities have had a tremendously positive impact on our nation, graduating more than 20 million students. And in partnership with USDA, more than 100 land-grant institutions and other research partners have helped conduct the groundbreaking research that remains the envy of the world.

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 the USDA's rich science and research portfolio.

Many teachers use creative methods to keep their students engaged in the curriculum they are teaching. Some methods work far better than others. For one group in Hawaii, teachers are using gardening to boost their science, technology and math classes, while placing an emphasis on Hawaii’s need for more experiential science learning related to agriculture and sustainability.

How do you get tent caterpillars and termites to follow a circle on a piece of paper? Paint the circle with pheromones.

This was one of the many cool facts that kids and adults learned perusing the USDA exhibits at the USA Science & Engineering Festival this past weekend.   I joined thousands of people during this three-day event designed to revive interest in science, technology, engineering, and mathematics (STEM) and promote careers in those fields.

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 the USDA’s rich science and research portfolio.

Porcine reproductive and respiratory syndrome (PRRS) is a disease that costs the U.S. pork industry an estimated $664 million per year. Recently, scientists have made a breakthrough in research efforts to curb the disease.

A consortium of scientists from around the country, with funding from USDA’s National Institute of Food and Agriculture (NIFA) and Agricultural Research Service (ARS), have discovered a genetic marker in pigs that identifies whether or not a pig has reduced susceptibility to PRRS.

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 the USDA's rich science and research portfolio.

In recent years, wildfires have become larger and more severe. After the fires, large areas are without protective vegetative cover, making them prone to soil erosion when rains come. The forest soils contain many plant seeds, but the soils need to be stabilized until these seeds have a chance to germinate and re-establish plant cover that can stabilize the soil.

Working in the dirt is no big deal for 4-H member Josh Tice. However, it’s not every day he gets invited to help First Lady Michelle Obama plant a cherry blossom tree in honor of the 100^th anniversary of Japan’s gift to the United States.

Josh, and his mom and dad, Deana and Josiah, were on hand last Tuesday for the event in Washington, DC. Josh was one of six young people selected to participate alongside the First Lady. During the event, Josh was able to meet Mrs. Obama and even give her a hug. Naturally though, his 4-H side shined through as he said his favorite part of the event was scooping up dirt for the actual planting.

Join us tomorrow for a Twitter chat to discuss womens' increasing role in science, technology, engineering and math (STEM). We'll be sitting down with Jenna Jadin, Ph.D, Office of the Chief Scientist and Dionne Fortson Toombs, Ph.D., National Institute of Food and Agriculture (NIFA) to answer your questions from our USDA Twitter handle, @USDA. We look forward to seeing you, and check out the Department of Energy's blog for additional info!

Got Questions about Women in Science, Tech, Engineering, or Math (STEM)? Tweet us!

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 the USDA's rich science and research portfolio.

One of the keys to improving biofuel production is to understand how plants are made and function. Two researchers from the University of Georgia (UGA)  have made strides in understanding how plant cell walls are made, opening a new door to converting plants to biofuels and other carbon-based products.

UGA researcher Debra Mohnen and her team discovered that two proteins (GAUT1 and GAUT7) come together in an unexpected way to make a carbohydrate, or a chain of sugar molecules, in plant cell walls. The work was funded through USDA’s National Institute of Food and Agriculture.

We know that America's farmers and rural communities are vitally important to our nation's economy, producing the food, feed, fiber and fuel that continue to help us grow. There are hundreds of programs and resources available to help meet these efforts.  However, sometimes it’s hard to know where to look.  To overcome this challenge, the United States Department of Agriculture’s (USDA) National Agricultural Library, in partnership with the American Farm Bureau Federation, has created www.Start2Farm.gov, an online database connecting beginning farmers and ranchers with available programs and resources.

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 the USDA's rich science and research portfolio.

When we talk about population growth, often the first question that comes to mind is, “How are we going to feed everyone?”  While an important question that needs to be addressed, rising populations also put increasing and competing demands on our natural resources. And these demands are putting local and state economies at risk. Within the next decade, solutions will be necessary to optimize water use while preserving rivers and streams.