This week, This Matters is publishing episodes of the Toronto Star's new podcast Small Things Big Climate. The Star is often inundated with emails from readers asking what they can do to fight climate change. While there are lots of things people can do to lower their personal carbon emissions – and it's important to feel like you're part of the solution – individual action cannot end global warming on its own. So in this episode we take a look at community groups working on scaling up individual action to the neighbourhood level, and ask a former environmental activist turned Member of Provincial Parliament whether writing politicians actually makes a difference.

• Host: Marco Chown Oved, Climate Change Reporter, Toronto Star
• Guests: David Langille and Julia Morgan, co-chairs of the Pocket Change Project. Peter Tabuns, former head of Greenpeace Canada and the Ontario NDP's environment critic.

To hear more episodes, go to Small Things Big Climate or find it in your podcast feed.