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Wind Power Shelters Sea Life

- Adam Clare

You read that right: wind power generation can shelter sea life. Offshore wind farms help create spaces that encourage sea life to grow in a similar fashion to coral reefs.

Offshore wind power and wave energy foundations can increase local abundances of fish and crabs. The reef-like constructions also favour for example blue mussels and barnacles. What’s more, it is possible to increase or decrease the abundance of various species by altering the structural design of foundation. This was shown by Dan Wilhelmsson of the Department of Zoology, Stockholm University, in a recently published dissertation.

“Hard surfaces are often hard currency in the ocean, and these foundations can function as artificial reefs. Rock boulders are often placed around the structures to prevent erosion (scouring) around these, and this strengthens the reef function,” says Dan Wilhelmsson.

Keep reading about offshore wind power at Science Daily.

An Introduction to Green Roofs

- Adam Clare

Want to get the low-down on something that could be above your head? Well here’s what you’ve been looking for: an introduction to green roofs!

Roof types

There are two basic types of roof greening covers: intensive (roof gardens) and extensive. Intensive planted roofs have a greater depth of growing medium to support a wider range of planting, and often include shrubs and trees. Extensive roofs are systems with low growing plants, such as sedums, with no access other than for occasional maintenance; this type of roof is intended to be self sustaining.

There are three main methods of building up a green roof:

Inverted roof – has the insulation layer above the roof deck, on top of the waterproofing layer; usually constructed over a concrete roof deck.
Warm roof – has the insulation layer on top of the roof deck and the waterproofing layer on top of the insulation. In this system the insulation is always dry, giving a static thermal rating.
Cold roof – has the waterproofing membrane placed directly on top of the roof deck, with the insulation installed below the roof deck, or the roof may be uninsulated.

Sustainability issues

Green roofs are recognised as important in the delay of rainwater run-off entering the storm water system, and the general retention of rainwater. Other recognized environmental advantages of green roofs include:

Improved conservation and biodiversity.
Provision of new wildlife habitat.
Improved thermal insulation of buildings.
Reduction of airborne particulates.
Reduction in urban heat island effect.

Read more about green roofs here.

Tokyo Film Festival Rolls Out Green Carpet

- Adam Clare

The Tokyo International Film Festival has rolled out a green carpet made of recycled plastic bottles to show their support for the environment. You can read about their Green Carpet Club here and the Globe and Mail has a short article on the festival, which is also showing The Cove (trailer below).

The theme of the nine-day festival, which started Saturday and will feature more than 100 movies, is ecology. Films include The Cove , a documentary that depicts an annual hunt of dolphins in Japan. Festival organizers added it at the last minute in part because of pressure from overseas.

Brownfields Good for Green Energy

- Adam Clare 1 Comment

Brownfields are spaces that were used for some industrial production which have left the ground useless for nearly everything – even nature. Gas stations, refineries, and other chemical-intensive buildings tend to ruin the ground beneath their buildings once they close. The fields tend to have too high a concentration of heavy metals or other hazards to humans, plants, and animals.

The Obama administration has proposed that brownfields across the USA be turned into places that house green energy production. Since people don’t like cutting down trees for windmills why not put the windmills where the trees can’t grow?

Read more about it at The Daily Climate.

“In the next decade there’s going to be a lot of renewable energy built, and all that has to go somewhere,” said Jessica Goad, an energy and climate change policy fellow for The Wilderness Society. “We don’t want to see these industrial facilities placed on land that’s pristine. We love the idea of brownfields for renewable energy development because it relieves the (development) pressure on undisturbed places.”

There are many contaminated sites nationwide to choose from.
The Environmental Protection Agency and the National Renewable Energy Laboratory have identified nearly 4,100 contaminated sites deemed economically suitable for wind and solar power development, as well as biomass. Similar maps are expected to be released this month for contaminated sites with geothermal-power potential.

Included in the 4,100 sites are 5 million acres suitable for photovoltaic or concentrated solar power development, and 500,000 acres for wind power. These sites, if fully developed, have the potential to produce 950,000 megawatts – more than the country’s total power needs in 2007, according to EPA data.

Concepts for Vertical Farming

- Adam Clare 1 Comment

Vertical urban farming is pretty awesome and here’s 20 mockups of what urban farming could look like.

urban farming concept

If cities needed to be redesigned to fit a changing environment, a design like this one for the city of San Francisco would not only be environmentally friendly, but this one is estimated to be able to feed over 7 million people.

The world of vertical farming could offer so much to the world as it concerns food, the environment, and our living space issues, as its estimated that we could have as many as 9 billion people on the planet by 2050. It will take a lot of planning, and a lot of energy, but if most of these buildings can be somewhat self energy sufficient, vertical farming could be viable within a relatively short period of time.

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