LED lights save a lot of money, could save even much more

According to a study carried out in the United States by the local Department of Energy (DOE), the 49 million LED light bulbs already installed helped save a massive $675 million (over 500 million euros) in a single year. But wait, there is more as if all light bulbs in the United States were replaced… Continue reading LED lights save a lot of money, could save even much more

A Kickstarter success, the Nanolight

Do you know Kickstarter, the world’s largest funding platform more used to fund video games and other similar projects ? Well, one of its recent successes is the Nanolight, perhaps the world’s most efficient light bulb. Only consuming 12 W to offer the light of the traditional 100 W incandescent bulb, the Nanolight was developed… Continue reading A Kickstarter success, the Nanolight

Starry, Starry, Starry Night

You may perhaps remember the not so distant time when I was posting astrophotography pictures on this very website. I have also wrote a few times on how we are lighting up our cities too much. Now a fellow Frenchman, Thierry Cohen, created a series of pictures of what the night could look like if… Continue reading Starry, Starry, Starry Night

Towards sustainability, reloaded : electricity

For the second part of this series – the first one was on heating – we are having a look at electricity consumption of households and the various ways we can decrease it. This will enable you to have lower energy bills – always a good thing with the hard times we have – to… Continue reading Towards sustainability, reloaded : electricity

The ten most promising cleantechs

The Guardian Sustainable Business blog published last week an interesting post on the ten most promising future cleantechs. I have to admit I am not sure all of them really are as I spotted at least one odd out. Indeed, even if algae, zinc air batteries, organic solar cells or marine energy and most other… Continue reading The ten most promising cleantechs

For many, the sky isn’t dark anymore

I already wrote a few articles on dark skies and light pollution. It seems the phenomenon is even worse as one can see with the image on left (courtesy of Stellarium, a great astronomy freeware) This also has an important impact on greenhouse gases emissions. In Australia alone, public lightning is responsible for 1.15 million… Continue reading For many, the sky isn’t dark anymore

Great astrophotographies – August 2010

This is time for me to present my selection of the best pictures of the NASA’s Astronomy Picture of the Day (APOD). This month was a bit special as I could only select eight of them. To the NASA, today’s picture : Storms on the distant horizon and comet dust raining through the heavens above… Continue reading Great astrophotographies – August 2010

Great astrophotographies – July 2010

This is time for me to present my selection of the best pictures of the NASA’s Astronomy Picture of the Day (APOD). As always, this month was packed with beautiful images. It was difficult to select just ten. To the NASA, today’s picture : On July 11, after a long trek eastward across the southern Pacific… Continue reading Great astrophotographies – July 2010

Barcelona’s amazing smart lightning idea

The city of Barcelona and Spanish utility Endesa have been installing smart LED lightning systems that automatically switch themselves off when no one is around. This enables the city to cut by 30 percent its electricity consumption. I really would like this idea to spread across Europe and even the entire world. Indeed, how many… Continue reading Barcelona’s amazing smart lightning idea

The huge potential of LED lightning

The US Department of Energy released last week an interesting study on how LED lightning could enable America to save $120 billion (88 billion euros) over the next 20 years. To Ecogeek : ” The cumulative savings of widespread adoption of this technology over the next 20 years would be about 1.500 terawatt-hours (…) The… Continue reading The huge potential of LED lightning

A great video on why CFL are fantastic

If you had a look recently at the sidebar of this blog, you may have noticed that I added a link on what is RSS just next to the subscription button. This sends you to a page featuring a great video by the Common Craft Show. This company didn’t stop right there and did the… Continue reading A great video on why CFL are fantastic

A controversy on low-energy light bulbs

I have been reading and enjoying for some months the Business of green blog from the IHT. The RSS feeds of this blog are displayed on my sidebar. Today I was reading their latest article “Do low energy light bulbs work?” and I felt like giving my humble opinion on that matter and posted a… Continue reading A controversy on low-energy light bulbs