Switch off for Earth Hour

8.30pm on Saturday 27th March sees the start of Earth Hour, when we are all urged to switch off unnecessary lights for an hour in support of resource conservation. Iconic buildings like the Empire State Building, Sydney Opera House and the Las Vegas Strip will go dark for an hour at 8.30pm local time. Seems like the perfect opportunity for a candlelit dinner.

Or why not go one further and switch off the TV, PC and gaming consoles too and play good old-fashioned board games or cards?

The WWF is encouraging participants to record their contribution by uploading photos to Flickr, videos to YouTube and tweeting with the hashtag #earthhour. You can find details of how to get involved here.

Climate Savers Computing is encouraging all its members to set their computer's power management settings to a more frugal setting for Earth Hour - a timely reminder that if you work in an office it's likely to be unoccupied for at least 70% of the time. Turning off computers and other office machines out of hours could reduce your energy bill as well as your carbon footprint, so reach for that off switch before you go home this weekend.

Fairtrade Fortnight The Big Swap

Today sees the start of Fairtrade Fortnight and this year the theme is The Big Swap. People are encouraged to switch to fair trade products and register their swap on the website, to count towards the target of one million and one swaps during the campaign. The website contains useful information on how fair trade products benefit those involved in their production and suggests categories of product where the switch can be made, from coffee to cosmetics.

Vintage - recycling in style

With fashion fads changing so quickly, the timeless appeal of vintage clothes gives them a longevity that today's clothing just can't match. But finding good quality vintage pieces can be difficult; most of us don't have the time to scour the fleamarkets in search of a bargain and vintage retailers are relatively rare. But buying online can be risky, as you're never quite sure what you're getting.

I'm impressed by online vintage retailer Love Miss Daisy. The clothes are gorgeous, condition is both categorised and supported by individual comments about any blemishes, and actual measurements are provided instead of just the size on the label. Vintage clothing is great from an environmental point of view, as it gives new life to garments that would otherwise end up in landfill. And it's the perfect choice for individualists who don't want to run into somebody else wearing the same outfit to the same event.

Permitted Development for domestic wind turbines mooted in Scotland

According to the BBC, homeowners in Scotland may soon be allowed to put wind turbines up to 3m high and 3.5m in diameter on their roofs without planning permission, under permitted development rules. Free-standing wind turbines as tall as 11m and at least 100m from neighbouring properties could also be allowed, except in conservation areas. Air-source heat pumps would also be allowed, even in conservation areas, if they were invisible from the road.

The proposals are due to be launched next Friday as part of an ongoing consultation on renewable energy.

Climate change minister Stewart Stevenson claims the proposals strike the right balance in the best interests of Scotland, claiming: "By cutting red tape in the planning system we can make it easier for households to generate their own clean, green energy." He argued that the proposals will boost Scotland's renewables sector, potentially generating new jobs.

There's still considerable controversy about the carbon efficiency of small scale wind turbines, with fears that they may not be able to save enough carbon during their operational life to repay the carbon debt incurred in their manufacture. And many urban sites will not have sufficient airflow to operate the turbines effectively. The plans do allow anemometer masts, which measure wind speed, on roofs and in gardens, for a maximum of 12 months, but it's possible that many homeowners will skip this step to reduce the expense.

Relaxing planning restrictions on renewables is generally a positive step, but much better information on the relative efficiency of different systems is essential to avoid people investing in sytems which, despite their good intentions, don't reduce carbon emissions.

Note to Greenpeace - it's not about the polar bears!

I spotted a banner on the excellent Greenbang site from Greenpeace, which is exhorting us to save the polar bear by donating £3 per month. Surely this kind of "save the fluffy animals" approach to climate change is way out of date? It's not that I don't care about the polar bears, but much more is at stake. And photos of cute creatures simply trivialise the largest single threat to mankind ever. It's our own extinction we're facing, not some animal most of us have only encountered in zoos.

It's not that I don't applaud Greenpeace's work, I just think they need better ads - especially on a site like Greenbang, which is likely to attract readers already quite well informed on climate issues. Any species going extinct is a bad thing - but if we can save ourselves, the polar bears will survive too.

Ethical travel company drops offsets

Ethical Performance this month reports that responsibletravel.com has removed the facility for its customers to offset their travel emissions, arguing that effort needs to be reinvested into actually reducing greenhouse gases. The travel agent was established in 2001 with backing from private investors including Anita Roddick and was one of the first in the tourism industry to introduce an offset scheme. However, it now feels that carbon mitigation must be its first priority and that offseting distracts from the real issues.

Responsibletravel.com turns over more than £10m and offers a choice of 3,500 holidays, all of which can be booked as "land only" packages that don't involve flying. It now offers "carbon cautions" to customers, giving advice on reducing emissions through lifestyle changes. Its actions are likely to be welcomed by NGOs such as Friends of the Earth, which has called offset schemes "a dangerous distraction", and Sinkswatch, which says that offsetting schemes run the risk of exacerbating climate change by providing a false expectation that they are making a difference.

UK Government announces boiler scappage scheme

Today's announcement of a new boiler scrappage scheme will be good news for people struggling to meet the cost of upgrading old, energy-inefficient boilers. And, unlike the car scrappage scheme, it actually promotes the adoption of more energy efficient products. A payment of £400 can be claimed from the Energy Saving Trust by any householder replacing a G rated boiler with an A rated one, and boilers can be purchased from any authorised installer. The large energy companies are likely to offer a £400 reduction in price to match the government's contribution, but buyer beware - their prices are often higher than independent installers, so it pays to shop around.

The government estimates that domestic heating is responsible for 14% of the UK's carbon emissions; the scrappage scheme will reduce energy bills by an average of £235 per year, saving as much CO2 as taking 45,000 cars off the road. The £50m fund will only cover the rebate for 125,000 households of the estimated 3.5 million with G rated boilers, so it pays to act quickly. You can check your eligibility here.