Travel Touch base: the portable loos on Aconcagua

The man who pays his way

What to do if ... you want to live off-grid

Michael Rea, 64, and his wife Dot retired to the Shetland island of Unst in 2001 and now live in a zero-carbon house. In the past year, the couple have lived near off-grid, with heating costs of just 50p a day for their 180sq m home in the most northerly part of the British Isles

<i>IoS</i> letters, emails &amp; online postings (13 December 2009)

Technological solutions to global warming which propose blocking sunlight ("The power of 10", 6 December) are a dangerous delusion.

David Prosser: Will customers smart?

Outlook For those who mistrust the UK's biggest energy companies' attitude to their customers, the roll-out of smart meters to every home in the UK will ring alarm bells. The Government said yesterday that energy suppliers would have to pay to install all those meters – at a typical cost of £340 per household – but also that it would not stop them recouping the money from customers.

The 10 greenest ski lifts

One of the world's first dedicated ski lifts was a very green machine. It operated in Germany's Black Forest in the early 20th century and was powered by the local water mill. A century later, ski lifts are going back to renewable energy.

Google plans new mirror for cheaper solar power

Google is disappointed with the lack of breakthrough investment ideas in the green technology sector but the company is working to develop its own new mirror technology that could reduce the cost of building solar thermal plants by a quarter or more.

Katy Holland: Accommodation that's geared up for kids

Are We There Yet? Who needs a plain old ensuite with sea view when you can have a converted cave

Consuming Issues: How to cash in on sunshine

Until now, householders have lavished large sums on solar panels to help the planet rather than themselves. Scientists are concerned that climate change will plunge hundreds of millions of people into hunger, provoke mass migrations, and cause increased storminess, flooding and extreme heat in the UK.

Leading article: Wind power &ndash; a cautionary word

All new technologies carry risk. That is true of benign new technologies as well as the old industrial sort. This paper's report on the potential health hazards of wind turbines, generators of eco-friendly wind power, will be unwelcome for many environmentalists and indeed for the Government, which for entirely creditable reasons is committed to a great increase in their number. But a new book by a New York paediatrician, Dr Nina Pierpont, on which our report is based and which draws on international studies, ought not to be ignored.

Solar-powered soldiers in the pipeline

Darpa, the US defence research agency, is devoting $100m to alternative energy. But will it be commercially viable?

Island will only use green power

The tiny island nation of Tuvalu, already under threat from rising seas caused by global warming, has vowed to do its part for climate change by fueling its economy entirely from renewable sources by 2020.

Round-world flight planned for solar-powered plane

A solar-powered plane its inventor hopes will lead to a non-stop round the world flight was unveiled today.

The seven ages of green

Once, people with concerns about the environment were written off as busybodying crusties, but times &ndash; and eco warriors &ndash; have changed. Jonathan Owen talks to the everyday people making a difference

From solar-powered chalets to yurts with iPod docks a new breed of chic festival digs offer an alternative to the humble tent

Anybody who's spent a weekend in a field sipping warm lager and leaping about to The Verve will be only too familiar with the downside of festivals. The tent. If it's sunny outside, it's clammy inside. If it rains, leaks are guaranteed. Smears of mud, spilled bottles of Magners and and poisonous sleeping bags can turn the average nylon shelter into a no-go area.

Katy Holland: Glamping - The coolest craze in canvas

Are we there yet? Step away from the tent poles right now &ndash; and consider glamping instead
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Beyoncé poses as Rosie the Riveter

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