The Great Debate UK

from Environment Forum:

Pure water from solar power; will it catch on?

Photo

water1 Remote villages in developing countries might benefit from these twin 40-ft long containers (left) -- a water purification system driven by solar power -- as a substitute for noisy diesel-powered generators, trucks bringing in water or people spending hours every day walking to fetch water.

That's the hope of the makers, environmental technology group SwissINSO Holding Inc. The small company has recently won its first contracts to supply the systems to Algeria and Malaysia and is aiming to sell 42 units of what it calls the world's "first high-volume, 100 percent-solar turnkey water purification system" in 2011.

The system, an interesting-sounding technology in a world where more than a billion people lack access to fresh water, could also have extra uses from disaster relief to construction sites or to helping armies stay healthy in remote regions.

Chief Executive Yves Ducommun (below right) says that the machines, housed in the two containers, can pump 100,000 litres of drinking water per day for 20 years at a price of less than $0.03 per litre, including running costs. The system costs between $800,000 and $1.2 million up front, depending on factors such as how many solar panels are needed to drive the purification, which filters out dirt and toxins, or salt from seawater, through a membrane.Yves_Ducommun_CEO_SwissINSO_Lausanne_23 Nov 2010

from Environment Forum:

Bjorn Lomborg: skeptic or too much an optimist?

Photo

lomborgBjorn Lomborg, author of "The Skeptical Environmentalist," used to argue that concern about climate change was overblown because there were better causes to spend money on such as curing AIDS or malaria.

The Danish political scientist now says in a book coming out later this month called "Smart Solutions to Climate Change: Comparing Costs and Benefits,"  that global warming is one of the top challenges facing the world and we should spend money on trying to fix it - $100 billion a year.

  •