Green computing is the concept of responsibly using computers and conserving its related resources. Such as the implementation of energy-efficient CPUs, monitors, printers, servers and pheripherals as well as reduced resource consumption and reuse and/or recycle materials such as paper and printer catridges.

Such practices can be adapted in our on campus and also for those who owns a personal computer we can help our environment by:

Conserving Energy
-Use the power management options installed in the computers, set turn on the sleep mode if pc is not being used physically (e.i. encoding) but is use for running other "background programs" (e.i up/downloading).
-Turn off computer and /or peripherals when they are not in use. A modest amount of turning on and off will not harm the equipment.
-Don't turn the printer on until you are ready to print.
-If monitors are not needed for "servers" to operate, keep server monitors off. I dont exactly know how frequent the servers in our campus is being use though, but turning off its monitors would save energy consumption of the university.

Reduce Paper Use:
-Recycle waste paper.
-Before recycling paper which has print on only one side, set it aside for use as scrap paper or in printing drafts.
-When documents are copied such as lesson handouts, use double-sided copying or "back to back" copying to conserve paper.
-When general information-type documents must be shared within an office, try circulating or passing them around instead of making an individual copy for each person. This can also be done easily by e-mail.


Reusing and Recycling Printer Cartridges:
-Do not throw away empty printer cartridges unless it is broken. An ink refill technician once told me that an average cartridge will last for 4-5 refills then it starts to leak. As long as the cartridge is not broken it can still be refilled.

Environmentally responsible computer use implies not buying new equipment unless there is a demonstrated need:
-If it can still be fixed, then just fix it (I think this idea is already adapted in our university).

When buying a new equipment, buy efficient and buy green:
-Buy only "Energy Star" computers, monitors and printers.
-Buy LCD monitors because they say it typically uses a cold-cathode fluorescent bulb to provide light for the display. Some newer displays use an array of light-emitting diodes (LEDs) in place of the fluorescent bulb, which reduces the amount of electricity used by the display.
-Buy a monitor only as large as you really need. Since its an office/school device, i think 15 inch monitors is enough.
-Buy ink jet printers, not laser printers. According to the University of Buffalo ink jet printers use 80 to 90 percent less energy than laser printers and print quality can be excellent.

Recycle, not dispose computers and/or its parts:
-Recycling computing equipment can keep harmful materials such as lead and mercury out of landfills or dumpsites. I don't know if there are certain junk shops for computers and/or its parts, but if there is it would be the best place for damage electronic equipments to be disposed.

References:
http://en.wikipedia.org/wiki/Green_computing
http://searchdatacenter.techtarget.com/sDefinition/0,,sid80_gci1246959,00.html
http://wings.buffalo.edu/ubgreen/content/programs/energyconservation/guide_computing.html