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Windmillprint-crop.jpg As part of a 3-D printing class, graduate students will be designing printable open-source appropriate technology for sustainable development. If you want a technology designed to be 3-D printed, post your ideas here. Chosen designs will be made and open-sourced for the global community. Deadline Nov. 13, 2014


Horsetail
The chief medicinal property of horsetail is its high silica content. The best dietary source of silica is whole grains-meaning much of our dietary silica is lost in the refining process. In addition to silica, horsetail contains large amounts of potassium as well as aconitic acid, equiaitinee, starch and many fatty acids. Horsetail is often used for mending broken bones. Our hair, skin, nails, and bones all need silica. Silica gives our cells strength, durability, and flexibility.

Think about walking outdoors on the grass. You put a lot of weight on the little blades of grass, but they spring right back up again. This is because of the high silica content in the grass. Silica enables the blades of grass to be resilient and bend, yet not be broken. Without silica, our bones would be very brittle and break easily. The same is true of hair, skin, and nails. Without enough silica in our diet, our hair can be brittle and break easily, causing split ends.

Without enough silica, our skin loses its elasticity. Without enough silica, our nails become very brittle and split. As horsetail is very, very high in silica, it feeds our hair, skin, and nails along with our bones and keep the cells in these systems strong and resilient.

Decreasing turbidity to optimize solar water disinfection

Salt and sunlight can actually be used to clean water with the SODIS method.

Brundtland addressing the Congress of the Labour Party, 2007.
Fundamentally, sustainable development is a notion of discipline. It means humanity must ensure that meeting present needs does not compromise the ability of future generations to meet their needs.

Gro Harlem BrundtlandW
You can have a green Christmas.
Green living (or sustainable living) is about practical choices, large and small, to preserve the earth and have a better quality of life. It is a lifestyle that attempts to reduce an individual's or society's use of the Earth's natural resources and his or her own resources.

In order to make sustainable choices, it is very helpful to have solid, reliable information that tells us which behaviors are sustainable and which are unsustainable. In quantitative terms, which actions will make the greatest difference, and should be prioritized. Green living can be high tech (buying a hybrid vehicle), low tech (green cleaning, or completely "back to nature." It can be smart grid or off the grid. Sustainable city living explains some of the areas of action for a city dweller.

Practitioners of sustainable living often attempt to reduce their carbon footprint by altering methods of transportation, energy consumption and diet. Proponents of sustainable living aim to conduct their lives in ways that are consistent with sustainability, in natural balance and respectful of humanity's symbiotic relationship with the Earth's natural ecology and cycles. The practice and general philosophy of ecological living is highly interrelated with the overall principles of sustainable development.

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Engineering 308 (Engr 308), Technology and the Environment, is a course taught at Humboldt State University, currently by instructor Lonny Grafman.

Arcata bags

2012: Entire class partnered with Humboldt Scrap to analyze the embedded energy and carbon in various reusable and single use bags in Arcata  
Dominican Republic alternative building analysis

2011: Entire class Partnered with the Dominican community of La Yuca to compare the cost, embedded energy and carbon between three building methods  
Arcata plastic bags

2010: Entire class partnered with the City of Arcata to analyze the embedded energy and carbon in single use plastic bags in Arcata  
CCAT PV system energy analysis

2009: One team partnered with CCAT to analyze the function and energy buyback of their photovoltaic system, others teams included partnering with CCAT on Papercrete vs. StrawBale and Environmental impact of clay vs lime; with RCEA on Street lighting Analysis); and a local business on Multi-Pure vs. Brita Analysis  

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