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Fuel cells need a catalyst to speed up the chemical reactions that change hydrogen into water and electricity. Platinum is very good at this but it is famously expensive and rare. Some microbes, though, have known for a billion years how to make enzymes that can do the job using cheap and abundant nickel and iron. These natural enzymes are unfortunately difficult to obtain and do not do so well outside the microbe. Now researchers have...

2011-08-11

 platinum nickel catalyst chemistry hydrogen fuel sustainability energy enzyme microbe
Hewlett Packard has been ranked as the most sustainable consumer electronics maker by the campaign group Greenpeace.

2011-11-10

 Hewlett-Packard Greenpeace sustainability
Wildpoldsried produces 321 percent more energy than it needs and is generating $5.7 million in annual revenue — a remarkable accomplishment for a modest farming community that has been able to invest in new municipal infrastructure without going into debt.

2011-08

 sustainability energy Germany
Hewlett-Packard, the world's largest maker of personal computers, has unveiled a design for more energy-efficient data centres...

2012-05-31

 Hewlett-Packard cloud computing sustainability energy

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