Archive for the ‘Technology’ Category

May20

Can we capture the carbon?

CCS Technology Demo

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When I speak to public audiences about climate change, people often ask: Isn’t there a way to capture and remove carbon dioxide from the atmosphere?  (more…)

May13

A green start to 2013

wind turbine

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The Federal Energy Regulatory Commission issues a quarterly report on the installation of new electrical generating capacity in the US.   The report for the first quarter of 2013 is notable in that 82% of new generating capacity came from renewable energy sources.  The remainder came from natural gas. (more…)

May08

Concentrating solar power

Concentrating Solar Power

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Photovoltaic panels convert sunlight directly into electricity.  But they aren’t the only way to get electricity from the sun.  Concentrating solar power, known as CSP technologies, use arrays of mirrors to reflect and concentrate sunlight onto receivers that collect the energy and convert it to heat. The heat then produces electricity using a steam turbine or heat engine to run a generator. (more…)

May03

Wastewater from hydrofracking

Marcellus Protest

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In New York State, no issue is more controversial than using hydraulic fracturing to extract natural gas from the Marcellus Shale formation. Here a well is drilled vertically, then horizontally into the layers of gas-rich shale.  High pressure injection of water and fracking fluid fragments the shale, releasing the natural gas, which then flows back to the surface along with some water, known as flowback water. (more…)

May01

Is natural gas really a cleaner fuel?

Gas Storage Tank

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The discovery of abundant natural gas in shale formations has been hailed as a potential game changer for greenhouse gas mitigation.  For the same amount of energy, carbon dioxide emissions from burning natural gas are only half of those produced by coal. (more…)

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