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LED Backlit TVs

40% power reduction puts LED backlit TVs at the forefront of green technology.   More on LED TVs. 
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Seaweed farms

One seaweed farm may produce enough biofuel to supply 30% of Japan's fuel consumption.  More on Seaweed farms. 
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Heat Pumps

An incredibly efficient and technically elegant solution to heating and cooling.  More on Heat Pumps.



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Arctic Ice Photos

Arctic ice and glacier photos were released last week by the Obama Administration.   More on Arctic Ice.
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Pika is running out of living spage

Endangered!

Not only are animals threat- ened with extinction, but also cities and islands.  More on Endangered.
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Picture of OXFAM global warming reportBleak Realities

Millions face difficult times in the countries most affected by global warming.  More on Bleak Realities.
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Entries in catalyst (1)

Tuesday
Sep292009

Green technology

Fuel Cells (Part 2)


Fuel cells generate electricity by means of a chemical reaction.  The reaction takes place at two electrodes similar to a battery with one positive electrode (anode) and one negative (cathode). The electrodes are separated by an electrolyte membrane.  In a hydrogen fuel cell, hydrogen gas is passed over the anode and reacts to a catalyst ...

More on Fuel Cells...
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