This article article is showing how soldering is really supposed to solder. It says that before you solder you have to clear the surface and make it free of oil and grease. It also talks about fluxes, solders, and post-soldering treatment.
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http://www.greentechmedia.com/articles/read/america-will-add-one-gigawatt-of-solar-every-month-between-now-and-the-end I think this article was very interesting because I think it is really cool that the US is making progress even if it is a little bit but we are doing something. I think it is going to be an improvement if the companies around the US use solar energy because they're is a lot of companies around the world. They're is about 734,000 homes in the US that have solar systems.
http://www.theguardian.com/environment/datablog/2009/sep/02/energy-use-demand-efficiency-fossil-fuels I think that this is very important because everybody in the world should care about what we're breathing. it says that we are emitting a lot of carbon into the air and that "fossil fuels are still our primary source of energy." we are currently trying to find another source of energy that we could rely on. We say that we are trying to reduce the amount of carbon emissions released but we really don't.
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Ivette Murillo