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Sharing knowledge to build rich, sustainable lives.

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Fixed dome digester
Biogas and liquid biofuels. Biomass residues can also be converted into various non-solid fuel forms. These fuels are referred to as biogas and liquid biofuels. The aim of this conversion process is to improve the quality, specific energy content, transportability, etc., of the raw biomass source or to capture gases which are naturally produced as biomass is micro biologically degraded or when biomass is partially combusted. Biogas is a well-established fuel for cooking and lighting in a number of countries, whilst a major motivating factor in the development of liquid biofuels has been the drive to replace petroleum fuels. In this fact sheet we will be looking at some of these fuels, their applications and the conversion technologies used to derive them.

In Europe and the United States, as well as in several developing countries, there is a move toward cultivating energy crops specifically for the production of biomass as a fuel. The potential for energy production from biomass throughout the world is enormous and as fossil-based fuels become scarcer and more expensive, as carbon emission levels are becoming of greater concern and as people realise the benefits of developing integrated energy supply options, then biomass could begin to realise its full potential as an energy source.

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Solar Charged Lawnmower

Converting a very used gas power lawnmower into a solar charged, low emission, almost silent, lawn cutting machine.

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Community action news

Ciclismo en Amsterdam.jpg
Feb 20 Bike-Sharing Goes Electric In Amsterdam [1]

Feb 15 India news: India planted 50 million trees in one day – smashing the world record [2]

Feb 15 Michigan: Re-imagining the Civic Commons: A 21st Century Vision for Detroit [3]

Feb 14 Japan: Community Power Offers Fukushima a Brighter, Cleaner Future [4]

Feb 10 Minnesota: How Neighbors Turned Unused Buildings into a Thriving Community Hub [5]

Read More...


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Paul Polak presenting at the Cusp Conference 2008, Chicago, IL
I hate books about poverty that make you feel guilty, as well as dry, academic ones that put you to sleep. Working to alleviate poverty is a lively, exciting field capable of generating new hope and inspiration, not feelings of gloom and doom. Learning the truth about poverty generates disruptive innovations capable of enriching the lives of rich people even more than those of poor people.

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Estuaries and coastal waters are among the most productive ecosystems on Earth.
Water is vital for all known forms of life. Covering 71% of the Earth's surface, it is found mostly in oceans and other large water bodies. 1.6% of the total mass of the Earth's water is below ground in aquifers and 0.001% is in the air as vapor, clouds, and precipitation (rain, snow and sleet).

The Earth's water moves constantly through a cycle of evaporation and transpiration (evapotranspiration), precipitation, and runoff, usually reaching the sea. Over land, evaporation and transpiration contribute to the precipitation over land - thus deforestation and other changes to land can have wide and long-lasting effects through their impact on the water cycle.

Some observers estimate that by 2025 more than half of the world population will be vulnerable to a lack of water. Appropriate water supply and water purification technologies can help.

Related portal: Greywater
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ENGR 215 Introduction to Design projects – Fall 2005: RCEA: The Fall 2005 semester of Engineering 215 worked with RCEA to develop educational displays for the general public.

Fall 2005 ENGR 215 Intro to Design Projects - RCEA
A Bright Idea
To create an interactive, educational display that demonstrates the importance of electrical energy conservation  
Biggest Little Thing
To design an interactive display promoting electrical energy conservation  
Thermal Curtain
To educate people about thermal energy conservation  
Know Your Load
To educate people about phantom loads on electrical devices  
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