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American Drivers of New Cars Emit 22% Less CO2 that 6 Years Ago. What Happened?

After almost three decades of stagnancy US fuel economy is finally on the move.  Its actually quite something.  Fuel consumed peaked in 2004, miles driven in 2006 and vehicle numbers topped out in 2008.  Could motorization in the US...

Posted June 28, 2014    

It’s Not About Where Your Solar Panels Came From, It’s Where They Are Going That Counts

One of the most infuriating things about reading advice for people wanting to reduce their carbon footprint is the colossal lack of perspective people some folk have when it comes to cutting emissions.There’s people unplugging their phone...

Posted June 7, 2014    

Is Europe Paying the Price for Its Solar Leadership?

One of the most curious memes that has developed over the last few years is that the US leads the world in tackling carbon emissions.  Without as much as a breath this is typically followed by a sentence with the word ‘fracking‘.  But if...

Posted May 12, 2014    

10 Beautiful Eco Houses: Which One Would You Choose?

A couple of weeks back I wrote about 5 Key Ingredients For A Sustainable Home.  They were efficiency, energy production, house size, location and embodied carbon.  In hindsight there was a blindingly obvious 6th...

Posted May 3, 2014    

What's the Greenest Car? An Extremely Short Guide to Vehicle Emissions

A few months back I did a post called The World’s 7 Greenest Vehicles. It only included one car. Since then a few readers have emailed to ask if I could do a similar comparison, but for cars only. So here’s a very brief guide to vehicle emissions.In...

Posted April 27, 2014    

Beyond Efficiency: 5 Key Ingredients for a Sustainable Home (with DataViz)

Look at the two buildings above.  Both of these buildings are energy efficient homes.  Both are aiming for LEED platinum certification.  But only one is built up to be “the greenest New American Home in history”.  Can you guess...

Posted April 26, 2014    

10 Charts that Explain Climate Change Mitigation (Plus 2 More that Explain Negotiation)

I really love the IPCC (high confidence), but if you read the summary for policymakers (medium confidence), some of the wording doesn’t exactly role of the tongue (robust evidence, medium agreement). You know what I mean? (medium ...

Posted April 24, 2014    

Fossil Fuels are for Making Stuff

The IPCC just released its third assessment report on mitigating climate change.  I’ve spent the morning reading the full summary, and to help you save a little time I’ve whittled it down to a six word summary.Fossils fuels are for making...

Posted April 16, 2014    

What is the Greenest Source of Electricity?

Earlier this week the new French Prime Minister Manuel Valls reiterated President Hollande’s plan to cut French dependence on atomic power to half of all output by 2025, down from almost 75% currently.  The plan is to curtail...

Posted April 14, 2014    

The EV Wedge: How Electric Vehicle Fuel Savings Vary By Country (and Car)

Have you ever heard of the EV Wedge?No? Me neither. Let’s try to define it then.If you’d asked me to define the ‘Electric Vehicle Wedge’ a few years ago I would have chuckled a little, and suggested it was the small pile of cash you needed to afford...

Posted March 22, 2014    

5 Simple Ways to Save Food

Every year the world wastes enough food to fill a bin 1.2km wide, 1.2 km deep and 2.1 km tall.  Such a bin would makes the worlds tallest buildings look like matchsticks (see above).About three quarters of this waste occurs before food is ever...

Posted March 7, 2014    

Which Country Has More Solar Energy Capacity than the Rest of the World Combined?

In 2013 China installed a record 12GW of solar power capacity, considerably more than Germany ever has in one year.  I read stories about it all over the place.  It was big news for renewable energy watchers.What I didn’t read in any of...

Posted February 26, 2014