At HOME/WORK:
* Recycle
* Use and Re-Use before Recycling
* Save, don't waste water, food, power, oil, gas, soap... whatever! (You'll save money too!!)
* Use the minimum soap necessary, it pollutes rivers and seas
* Turn your heating down a couple of degrees in winter (you won't freeze... I swear!
* Use extra layers/jumpers to stay warm
* Use Florescent Instead Of Normal Lightbulbs
* Use A Fan Instead Of AC
* Only Eat Locally Grown Food
* Use Both Sides Of The Paper
* Turn things off when you're not using them (not just put on standby)
* Don't Use Bottled Water, Just Tap
* Measure out a cup of water and pour it in the kettle when making tea/coffee - rather than boil a whole kettle (take massive amount of energy to boil a kettle)
TRANSPORTATION:
* Walk/Bike Instead Of Drive
* Carpool
* Use Public Means of Transport
GENERAL:
* Try To Rent Instead Of Buy
* Plant One Tree/Plant Per Month
* Bring Your Own Bag To The Grocery Store
* Take an EcoTour Instead Of A Normal Vacation
* Use paper bags instead of plastic ones, whenever you can
* Wear natural-fabric clothes (Linen, cotton, wool, silk...)
* Prefer veggies/fruits loose to big polystyrene packagings
SPREAD THE WORD:
* Start A No-Idling Campaign At Work/School
* Start A Campaign To Use Recycled Paper At Work/School
* Spread The Word!!!
* Live Happily On Earth
Stop Global Warming
What else can I do?
UPDATED with suggestions by
EDIT: 10k pageviews!