Zipcar's campus car-sharing program has expanded to more than 140 campuses across North America and Great Britain. The program works by providing green cars on a shared basis to university communities where parking is a problem and car ownership is difficult and costly. University students and staff can use shared cars for off-campus errands and brief road trips.
Zipcar's program has grown 75 percent in the past year, now serving a total student population of 1 million in 25 cities. Using data from the EPA, Zipcar estimates its university programs have reduced carbon emissions by nearly 56 million lb annually, equivalent to the annual emission of 4,800 passenger vehicles.
A postcard or post card is a rectangular piece of thick paper or thin cardboard intended for writing and mailing without an envelope. There are novelty exceptions, such as wood postcards, made of thin wood, and copper postcards sold in the Copper Country of the U.S. state of Michigan, and coconut "postcards" from tropical islands.
In some places, it is possible to send them for a lower fee than for a letter. Stamp collectors distinguish between postcards (which require a stamp) and postal cards (which have the postage pre-printed on them). While a postcard is usually printed by a private company, individual or organization, a postal card is issued by the relevant postal authority.
Most machine design engineers will survey existing component manufacturers for standard linear guide products, limiting what they can do with their designs. Using extruded aluminum profile guides can customize machine designs while shrinking the bill of materials.
Practically all electronic devices today contain metals that may
be coming from conflict-ravaged African countries. And political pressures will increasingly influence how these minerals are sourced and used in products.
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