It is high time that we make slight changes in our behavior if we are at all to leave a planet for the future generation. The earth has been misused and mistreated for the past hundreds of years and it is not time that we think seriously on the fact that we need to take steps for conserving it.
Use less electricity whenever and wherever as possible. Carpool to office which save quite a lot of money as well as fuel. Recycle your phones as well as any other thing that might be recyclable for in doing so you have the opportunity to save quite a lot of energy.