Author: craigshields

As we frequently discuss, the real low-hanging fruit when it comes to greenhouse gas reduction lies more in energy efficiency than it does in renewables.  Efficiency invokes largely proven and inexpensive technologies, and holds the promise of putting many millions …

Low-hanging Fruit in Greenhouse Gas Reduction: Energy Efficiency Read More »

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I just participated in a real-time webinar, a live broadcast from the COP-18 meetings in Doha, Qatar.  Here are my notes: • In the past few years, over 30,000 peer-reviewed papers have been published on global climate change, only 24 …

COP-18 Meetings in Qatar on Global Climate Change Read More »

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Here’s an interesting (albeit disappointing) article predicting a slowing in cleantech investment in 2013.  On the bright side, it points to a number of areas of growth, for example, agriculture:  Big ag steps up and cleans up: …. after evaluating …

Investments in Cleantech May Slow, But Many Bright Spots Remain Read More »

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Fans of highly efficient internal combustion engines will be interested in this: a modern-day variant on a Wankel rotary engine of 50 years ago.  By firing 16 times per revolution, it achieves extremely high torque in a very small volume; …

Efficient Motors – “Massive Yet Tiny” Read More »

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When I walk along the beach and take in the beauty of the Pacific, it sure does look big.  Sure, the volumes of pollution pouring into our oceans is growing steadily, but won’t the sheer volume of water and abundance …

Keeping Our Earth Clean Read More »

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What wealthy folks are investing in saving our 750,000,000 acres of public trust lands? In housing for homeless? In cleaning up the plastic island in the Pacific larger than Alaska? In cleaning up the mercury from the oceans, the Great …

From Guest-Blogger Robert Hennkens: The Fiscal Cliff and the Responsibilities of Government Vs. the Private Sector Read More »

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Last night we published our 2500th blog post.  My sincere thanks to all of our contributors and supporters, and to the many dozens of fine friends I’ve made along the way.    I smile sadly when I hear about people rushing into …

Advocacy for Renewable Energy — 2GreenEnergy is a Speck in the Cosmos, But We're Goin' Strong and Feelin' Good at 2500 Read More »

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As those of us who are concerned about global climate change turn our attention to the COP-18 meetings in Qatar, we note that the host of these talks is among dozens of countries that keep gas prices artificially low through …

In 2012, Oil Received Six Times More Government Support Than Renewable Energy Read More »

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Here’s an article that presents the subject of waste-to-biofuels in a very readable, high-level way.  In the U.S., we’re converting about 3% of our organic waste to some form of useful energy, as compared to 37% in Europe.  Of course, …

Waste-To-Biofuels Read More »

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When I was still a kid, one of the movies I loved was Back to the Future. Yeah, and you can bet your dollar that one of my most favorite machines would be the time-travelling car that Marty McFly rode …

From Guest-Blogger Jessica Greenberg: Five Weird Energy Source Ideas Read More »

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