Below are some actions that almost anyone who cares about the future of humanity (or even just the future of their children or grandchildren or neighbourhood) could undertake. They are roughly in order of difficulty and expense, with the easiest first, though different actions will be more or less attractive or feasible for different people. Any or all of them would have positive effects, especially if widely adopted.*

1.       Challenge your MP on climate change - write or email or visit them. What are they going to do about implementing the Paris Agreement, reducing our dependence on oil, encouraging green industries and infrastructure…? Make climate change and CO2 emissions an issue in elections.

 2.       Challenge local councillors on climate change - write or email or visit them. What are they doing to improve local public transport, encourage cycling and walking, ensure that new local devlopments are energy-efficient…?

 3.       Consume less and waste less - everything we buy has produced  CO2 in the process of making or growing or transporting it. (But the CO2 calculation is not always straightforward - sometimes imported goods produce less CO2 than local ones, because the meat is grass-fed or human-power or the sun is used rather than oil-using machinery and heaters…)

4.       Eat less or no meat and dairy products - domestic animals produce methane, another greenhouse gas, and farming them uses land for their feed that could be afforested or used to feed people.

 5.       Buy your energy from a green energy supplier. 

6.       Support an environmental or wildlife charity or campaign. There are plenty to choose from, to suit almost any interest, and they all campaign against climate change.

7.       Travel less, and use sustainable means of travel whenever you can.

8.       Plant a tree - or pay for someone else to plant a tree somewhere else and protect green spaces and trees.

 9.       Spend and invest carefully, in ways that would reduce CO2  emissions and encourage e g renewable energy, clean green industries.

10.   Make your home and life as energy-efficient as you can - this is by no means cheap or easy, particularly if you live in an older house and/or want to invest in technology such as solar panels and heat pumps, but it will improve your comfort level and reduce your energy bills in the long run.

* "... If we wait for the governments, it'll be too little, too late. If we act as individuals, it'll be too little. But if we act as communities, it might just be enough, just in time."
Rob Hopkins, Transition movement founder in What is a Transition Initiative?