Setting your computer to sleep mode takes only a few seconds, but can reduce electricity use by 87% less compared to leaving it on (desktop computer). Modern computers are not damaged by frequent start up and shut down, and the surge of energy to start up the computer is very small relative to the energy used by leaving the computer on.

According to the DOE, the heating and cooling load of your building could decrease by 2-3%, if all its occupants adjusted their thermostats by even just a few degrees (down in winter and up in summer).

To dispel one common myth, it does NOT require more energy to turn the light back on—always best to turn it off if you leave!

According to the ENERGYSTAR calculator, if every student, staff, and faculty at Harvard replaced just one 60 watt incandescent bulb with a 15 watt CFL, we would reduce electricity use by an estimated 2,310,000 kWh per year, equivalent to the usage of 190 average homes in a year! And each bulb will last for 5 years, as opposed to 6 months with a regular bulb!

About 90% of the energy used by clothes washing machines is for heating the water. And according to the US Dept of Energy, washing clothes on cold or warm is usually sufficient, and simply using warm instead of hot can cut energy use for that load in half!

According to ENERGYSTAR, charges and power adapters account for about 6% of national electricity use! Unplug chargers when not being used, and keep any eye out for products that are using ENERGYSTAR qualified chargers coming soon.

Don't let heat escape through the window! At night, close the blinds, shades, and curtains—they will act as an extra layer of insulation.

Our commuting to work/school accounts for 7% of Harvard's greenhouse gas emissions: 19,000 metric tones of CO2 equivalents in 2005! This is equivalent to one of the following: taking 4,113 cars off the road for 1 year, saving over 2 million gallons of gasoline or 44,000 barrels of oil, or preserving 156 acres of forest from deforestation.

If a variable air volume (VAV) fume hood is not in use, keeping the sash wide open WASTES about $1,500 in energy costs per year per hood, about the same as the average US household. And closing the sash when not in use is always safest for the user.

Many lab equipment vendors are starting to install power save modes, efficient motors, and other strategies for reducing energy use of plug load lab equipment. Visit the Harvard Green Labs website for a short list of products we have identified, and the next time you are purchasing new equipment ask for the most energy efficient model!

If it's ok to turn it off, do it! This will reduce energy use, energy costs, environmental impacts, and often increase the life of the equipment. Contact the Green Campus to get "It's OK to turn me off" stickers for your lab.

In the U.S., produce travels an average of 1500 miles from its origin before it lands on your plate (USDA) Buying local reduces "food miles" which adds up to large reductions in fossil fuel needed for transport. Attend a local farmers' market. Reserve a Community Supported Agriculture share for next year. Read labels at the grocery store that report a food's origin. Stick to what's in season. Try putting 50% of your produce expenditures into local sources.

Make a change for a healthier you, healthier farmers, and a healthier planet! Growing food and raising livestock organically limits the chemicals being put into our bodies and our planet. Organic methods protect water quality, maintain soil fertility, and enhance biodiversity. Buying organic in and around Cambridge also supports farmers who choose to safeguard the health of their families by avoiding toxins in their fields.

When it comes to energy, how you choose to fill your plate is just as important as how you fill your gas tank. The difference in energy needed to produce a vegetarian diet versus the average American diet is equivalent to the difference between driving a sedan versus an SUV! Even simply reducing your meat consumption will have a positive environmental impact of high magnitude. There are many other benefits to eating less meat as well.

Take what you want, but eat what you take! Food scraps rank third in their contribution to solid waste in the U.S., accounting for 17.5% of our garbage. It only takes a minute to think before you order or fill your plate in the dining hall. By doing so you can take control of a large proportion of the waste you produce.

While washing dishware also requires water and heat, constant use of disposables can add up to be more harmful to the environment. You don't have to swear off disposables entirely, but instead choose reusables when the option is available. Look for more reusable dishware options in dining halls on campus.

According to a NY Times article, Americans will throw out over 30 billion single serving bottles of water this year! If you are concerned about your tap water, use a filter on the faucet—a much more eco-friendly way of ensuring pure water.

Turn off the water faucet when brushing your teeth, washing your face, or shaving. The average faucet uses between 2 and 3 gallons per minute! Leaving the water running for just 2 minutes every day would waste up to 2190 gallons of water each year.

A standard shower head uses about 5-7 gallons of water per minute (gpm)—so even a 5-minute shower can consume 35 gallons! Better yet, install a low-flow showerhead, which use 1.5-2.5 gpm—it's an easy way to cut your water use by 50-80%! You may be able to get a free low-flow showerhead from the Massachusetts Water Resource Authority.

Visit the government's website http://www.labs21century.gov to find information about improving the environmental performance of labs.

When you place "Please consider the environmental impacts of paper production and use before printing this email" in your email signature you'll influence the recipients of your emails to reduce paper consumption, and will help make it the norm to consider the environment before consuming.

Harvard has over 42,000 students, fellows, faculty, and staff. If each person were to buy one coffee a day, every day, Harvard would send over 15 million coffee cups to the landfill every year. Now imagine if those people had two coffees a day!

Close the recycling loop. We know you recycle your paper already, but what happens to that recycled paper? It gets made into high quality paper, so support the market for recycled paper and buy recycled paper! Of course you already knew that buying recycled paper saves trees, energy, water, resources like bleach, and landfill space, and it costs the same as non-recycled paper.

1 ream (500 sheets) uses 6% of a tree (and those add up quickly!) At least 38.9% of the U.S. waste stream is paper. One person uses two pine trees worth of paper products every year.

The EPA estimates that 75 percent of what Americans throw in the trash could actually be recycled. The aluminum can is 100 percent recyclable and can be used to make new beverage cans indefinitely.

As long as things are not contaminated, it's safe to recycle them in the Lab Plastics bins.

Don't let your old lab equipment sit in a closet or end up in a landfill- give it a second life by donating it to labs in developing countries who desperately need basic science equipment to continue their work. Visit the Seeding Labs (http://www.seedinglabs.or) for a list of items needed, or email info@seedinglabs.org if you have equipment to donate.

Last year over 7,000 students, faculty and staff signed the Sustainability Pledge, reflecting Harvard's national leadership in campus sustainability efforts. After pledging yourself, help to make that number grow even more!

Every day dozens of catered events are happening at Harvard. Check the EPA Green Meetings Guide to find out how you can green events in your department. Here are just a few ideas: use reusable or recyclable utensils and dishes, send materials via email instead of printing them out, and ensure there are recycling bins for cans/bottles and paper in the meeting room.

Chemicals in cleaning products can cause allergies, eye problems, cancer, and other problems. There are plenty of alternatives that you can use including homemade cleaners containing vinegar, baking soda, or lemon juice or the many green cleaners on the market.

Regular exercise, including simple measures like walking up stairs, can reduce the risks of many serious diseases. The average person burns 10 calories per minute taking the stairs, a difference in weight of 8 lbs over 10 years! Taking the stairs is great for your health, and reduces building energy use!