background preloader

Anticipation et prévoyance

Facebook Twitter

Phytoremediation: Marsh Plants that Clean Grey Water. How to live comfortably without power if an emergency forces you off grid. The power is out. The heat is out. Water is off. Suddenly, you are off the grid. Without the proper gear, this could be an uncomfortable circumstance for a day, a week, or even longer. Whether the outage was caused by a storm or system failure, it’s is essential to have a way to live off grid if you have to. Read on to learn how you can prepare yourself if you’re forced to live without power for a while. 1. First off, determine what living off the grid means for yourself and your family. 2.

Write a list of the items you need to keep running if you are off the grid. Related: 6 Emergency Essentials for Surviving 72 Hours Without Power 3. Take an inventory of what you currently have. Consider your pantry. 4. Understand the systems in your house. 5. Water. Related: Apocalypse “Preppers” Inspire On-the-Edge Survival Jacket 6. Heat. 7. Cooking. 8. Light. 9. Sanitation. Remember, people lived “off-grid” for thousands of years: it’s not hard, and you can do it too. Images via Shutterstock. Carts and Tools - Exceptional farm and garden tools. What is Hempcrete? | American Lime Technology Website. Hempcrete is a bio-composite made of the inner woody core of the hemp plant mixed with a lime-based binder. The hemp core or “Shiv” has a high silica content which allows it to bind well with lime.

This property is unique to hemp among all natural fibers. The result is a lightweight cementitious insulating material weighing about a seventh or an eighth of the weight of concrete. Fully cured hempcrete blocks float in a bucket of water. Tradical® Hemcrete® Overview The material is mixed in mortar mixers for 1-2 minutes and stuffed by hand into the wall cavities.

The material is finished on the outside with a hard render coating about 20mm thick to protect it with a final colored topcoat finish added. Hempcrete was discovered in a bridge abutment in France built in the 6th century. Hemp itself is a beneficial crop requiring no fertilizer, weed killer, pesticide or fungicide. This added shipping reduces the carbon-negative feature of hempcrete in North America and adds to production costs. Property Protection: Living Fencing. Hemp Insulation: A Carbon Negative Alternative To Rock Wool. Hemp insulation mats are usually made from 85% hemp and 15% polyester. They can also be treated with boron salts to protect from fires, mold and insects. – As industrial sectors start to take interest in sustainable materials, one plant has caught their attention. Hemp is now being considered as an eco-friendly alternative to concrete, fiberglass and, as it turns out, building insulation as well.

Besides the fact that hemp is one of the fastest growing industrial crops, it also makes a great thermal insulator. Insulation made from hemp fiber performs about the same as mineral fibers (i.e. rock wool) at trapping heat. Their findings, published last month in the Environmental Science & Technology journal, looked at the energy requirements and greenhouse gas emissions involved with making hemp insulation, including plowing and sowing, cutting and harvesting, fiber and core processing, and final production of the hemp panels. How a Modern Root Cellar Could Help Small Farms Sell Food Year-Round.

At Food Farm in northern Minnesota, Janaki Fisher-Merritt is getting back to his roots. This second-generation farmer is putting a modern twist on an old-fashioned idea that could help scale up the local food economy in the region. He hopes to build a 3,700-square-foot root cellar that he says has the potential to keep fresh vegetables—not just root vegetable, but winter squash, cabbage, apples, and other cold storage food—available all winter long. “Not even pushing it, we should be able to store about 300,000 pounds [of produce],” Fisher-Merritt said. “It’s going to be really nice.” The project is not just about satisfying a craving for local carrots in February. The outsized root cellar, supporters say, has the potential to build local food infrastructure, improve the energy efficiency of agriculture in the region, and act as a model for other farmers with short, northern growing seasons.

To help pay for the ambitious plan, the popular farm is turning to the community. All Year Growing - Underground Greenhouses. There is a growing need for safe, healthy, and natural food items, and what seems like a decreasing amount of space to grow healthy organic food in nutrient-rich soil. Growers are always looking for methods which will save energy, reduce pollution, grow more and higher quality crops, and they want something that is affordable. Underground greenhouses are a preferred method for the environmentally conscious grower. Underground greenhouses can be constructed within a wide variety of geographic and climatic conditions, and because the ground is warmer in the winter and cooler in the summer, you are creating a far more stable micro-climate than growing outside. Typically, the design is built three to five feet underground, and the setup allows for the collection and storage of daytime solar radiation.

The greenhouse is covered with plastic sheeting, and the longest area of the rectangle of the design faces the winter sun. *cross-posted from Further resources. Thermal Mass & Energy Efficient Design: How Much is Enough? By guest author, Ashley Lubyk Thermal Mass Defined When it comes to building an energy efficient home the discussion often rests on how much insulation should be in the walls, in the ceiling, under the slab, etc.

But as I’ve written about before, energy efficiency is about more than just R-values. A house also benefits from having well placed windows balanced with a calculated amount of thermal mass to passively supply heating and cooling requirements. But how much thermal mass is enough? Before we really get into it let’s first define what thermal mass is. Insulation restricts the flow of heat while thermal mass freely and easily absorbs and releases heat. Freshly installed earthen floor for thermal mass with south facing windows for solar gain. Mass materials are dense and heavy and include things like stone, concrete, earthen floors, adobe blocks, cob, rammed earth, clay sand earthen plasters, brick, etc. How Much is Enough & Where Should it Go? General Rules This makes sense.

Summary. How to Build a Root Cellar in 7 Steps. Cleaner, More Efficient Method of Creating Biofuel. If ever you feel slightly pessimistic about the future, remember that there are brilliant young people out there who are willing to take charge and develop solutions to the world’s great challenges. 16 year-old Evie Sobczak from St. Petersburg, Florida has engineered a new method of turning algae into biofuel. She determined a novel and more efficient way to grow the organisms, extract oil, and use the product as biodiesel. Her method uses no chemicals, and creates 20 percent more oil than current technologies. Her efforts won her first place at Intel’s International Science and Engineering Fair. Sobczak’s project, Algae to Oil via Photoautotrophic Cultivation and Osmotic Sonication, is the most recent in her long line of scientific endeavors.

For a fifth grade science fair, she made a clock that ran on the acid from oranges. In the seventh grade, she generated energy from paddles that harvested the wind. Via Mother Nature Network Images via Intel ISEF. When to Vent Cold Frames. How should I monitor my garden cold frame on warm days to ensure I’m not frying my plants? Do I need to check the temperature every hour? No, not every hour, but you’re right to err on the side of vigilance anytime the sun is out — even if the temperature isn’t particularly high.

During spring and fall, when temperatures range widely, check your weather report early in the morning. If the day will be sunny with temperatures above 50 degrees Fahrenheit, the cold frame’s internal temperature will rise too high for your plants, so you should crack the lids open to allow excess heat to escape. Close your units up at twilight if the forecast predicts nighttime temperatures below your plants’ cold-tolerance level. Photo courtesy Cedar Cold Frames: Even when snow surrounds your cold frame, the plants inside may need a breath of fresh air. Rebecca Martin is an Associate Editor at MOTHER EARTH NEWS magazine, where her beats include DIY and Green Transportation. Des maisons de semences paysannes pour se libérer de l'agrobusiness - Souveraineté alimentaire.

« Il faut nous organiser pour récupérer toutes les semences qui sont dans les banques de gènes et remettre ce trésor entre des mains sures, celles des paysans ». Au milieu d’une centaine de variétés de maïs, en plein cœur de la Dordogne, Bertrand Lassaigne raconte l’histoire de la première maison de semences paysannes en France. Installé depuis 20 ans près de Périgueux, Bertrand cultive principalement des céréales et des protéagineux – maïs, céréales à paille, soja, lentilles... Peu à peu, il développe son autonomie en semences et parvient en moins de dix ans à autoproduire la quasi-totalité de ses cultures, sauf en maïs où il continue chaque année d’acheter de la semence non reproductible qualifiée d’hybrides. En 1999, une rumeur circule parmi les producteurs de maïs : des semences polluées par des OGM auraient été vendues. S’affranchir de l’industrie semencière Le début du projet est laborieux. Onze ans plus tard, les résultats sont là. Un mouvement mondial.