For other uses, see Fuel cell (disambiguation). This article... fuel cell (black layered cube) in its enclosure Scheme of a proton-conducting fuel cell A fuel cell is an electrochemical...
CR2032 lithium button cell battery Lithium 9 volt, AA, and... Lithium metal batteries are primary batteries that have... mobile phones and personal digital assistants, and of radio...
3 United Kingdom 4 Value of recycling 5 See also 6 References 7 Further reading Recycling [edit] Most cell phones contain precious metals [1] and plastics that can be recycled to save...
Modern mobile telephone services use a cellular network architecture, and therefore mobile telephones are called cellphones (or "cell phones") in North America. In addition to telephony...
Falconbridge recycles cell phones for their metal content. The company estimated that, in 1 metric ton of obsolete cell phones (exclusive of batteries), the average copper content was 140...
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Researcher Veena Sahajwalla on recycling “microfactories” ; BBC TV presenter Michael Mosley on the science of food and health ; Uber’s Kevin Corti on the hidden patterns of city transport ; Researcher and TV presenter Emma Johnston on the impact of cities on oceans
Cell phones seem ubiquitous in the United States and commonplace throughout most of the world. There were approximately1 billion cell phones in use worldwide in 2002. In the United States, the number of cell phone subscribers increased from 340,000 in 1985 to 180 million in 2004. Worldwide, cell phone sales have increased from slightly more than 100 million units per year in 1997 to an estimated 779 million units per ...
It's hard to imagine life without a phone in your pocket. The incredible transformation of cell phones proves just how far these modern marvels have come.