Category: Environment

One Amazing Fence

Fences can build good neighbours and fences can save the environment. One fence has done
wonders for protecting rhinos and water.

Colin Church, the chair of the Kenya-based Rhino Ark conservation group and a leading expert on African leading wildlife, said the fence, which took 21 years for local communities to complete, had failed to save the rhino in the uplands it surrounds.

However, it had succeeded in protecting a large forest area and the sources of four of seven of Kenya’s largest rivers, all of which rise in the Aberdares and provide electricity and water to major cities including Nairobi.

“In the early days, the motivation was to protect the black rhino, but then we all woke up to the fact that the farmers [who lived near the fence] were celebrating, and the reality is that this forested mountain area was the lifeblood for millions of people. We realised the whole ecosystem was at stake,” he said.

“Our thinking had to change.The Aberdares are now the most secure mountain ecosystem in the whole of Kenya and maybe Africa.”

Keep reading at The Guardian.

Idea for Christians: Carbon Fast for Lent

If you’re a christian who observes lent then consider going green for 40 days.

Repentance, reflection and self-discipline are supposed to be observed during Lent, which symbolizes the 40 days Jesus spent in the desert and resisted Satan’s temptations, as described in the Bible.

A green Lent could mean “thinking about the environment and doing things to save it for yourself and those who come after us,” said White-Hassler, whose church possesses the mind-set year-round. Since the summer, Grace Episcopal has been undergoing eco-friendly renovations and is considering solar panels.

The practice of a carbon fast for Lent has been talked about in Christian circles since at least 2008, when the Church of England suggested shrinking one’s carbon footprint and provided a list of 40 green actions, one for each day of Lent. (“Day one, Ash Wednesday: Remove one lightbulb and live without it for the next 40 days.”)

The call was part of a global effort with Tearfund, a Christian relief agency, to help drought-ridden, impoverished communities that already suffer from the effects of climate change.

Keep reading the article.

Estonia Cleans Up!

You probably didn’t hear about it, but in 2008 Estonia cleaned up 10,000 tons of trash in their forests by recruiting 50,000 people. How? Through an extensive media campaign and a good dose of networked collaboration.

The “Let’s Do It!” website is here, but in Estonian. So here’s a video in English!

Based on the success in Estonia, the campaign has gone worldwide!

Perhaps Your Pennies Can Clear the Air

Apparently copper can be used to scrub pollutants out of the air. Maybe one day a penny can help clean your house.

An easy way to get carbon dioxide out of the atmosphere is to find a chemical that combines easily with it, similar to the way that some metals oxidize. For example, compounds involving copper will usually combine with oxygen in the atmosphere voluntarily without catalysts, covering the surface of the copper material with a green patina, like the Statue of Liberty.

Unlike oxygen, carbon dioxide cannot combine so easily with other materials. It is possible to remove one electron from the molecule to facilitate its integration into other molecules, but that removal requires an electric potential of -1.97 volts, which is unreasonably high for the purpose of processing a single molecule.

One group of scientists found a certain dinuclear copper (I) complex that turns green when exposed to air under a slight electric potential (-0.03 volts). At first, they assumed it was from the exposure to oxygen, but upon closer inspection they learned that this particular form of copper was reacting with carbon dioxide.

Keep reading at Ars

Wind Power Shelters Sea Life

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.