What Can I do?

The Climate Emergency is in the News all the time now, and I want to do something to help, but what?
There are plenty of suggestions below, and food is the best thing to work on first. As well as reducing the amount of beef and lamb we eat we should try to waste less food. UK Households throw away 7 Megatonnes of food every year, and 5 Mtonnes of that is still edible!