There are three spheres of influence everyone has in doing something about climate change: as an individual, as part of your community, and as a citizen.
As an individual
On the road…
Drive less by combining trips, taking public transportation, and riding your bicycle
Get a vehicle that uses less fuel or, ideally, an electric vehicle (EV)
Take fewer airplane trips
Buy carbon offsets for the remainder of your carbon footprint
At home…
make sure your home is energy efficient (good insulation, Energy Star Rated windows, ducts and pipes wrapped)
install solar panels or join a community solar program, if that isn’t feasible
eat less (or no) meat and buy food that is locally grown in soils without chemicals
As part of your community
Bring up the importance of climate change in your conversations with neighbors (schools, book clubs, over the fence chatting about the weather, etc.
Make your personal actions to reduce your carbon footprint visible (rooftop solar panels and an EV in the driveway are great)
Promote community organizations and activities that support climate action
As a citizen
vote and support candidates who support climate action
support legislative bills and government policies that lead to a renewable energy society
write letters to the editor about climate action (e.g., the need for carbon pricing)
comment on EISs about and demonstrate against fossil fuel infrastructure projects (coal, oil, natural gas ports)
write letters to your state and national legislative representatives telling them you support climate action
go to representatives’ town halls and tell them you support climate action
Join organizations that are promoting climate action (like Citizens Climate Lobby to promote a national carbon fee and dividend)