People have killed 60% of all animals on Earth since 1970 and burnt or cut down half the forests on the planet in the last 100 years. It is predicted that by 2050 there will no longer be any viable fish populations in the seas and oceans. The warming of the atmosphere and oceans, caused by toxic greenhouse gas emissions, has reached such high levels that unless we stop burning fossil fuels by 2030 it is certain that future generations will have to face irreversible extreme weather conditions as well as unprecedented scorching heat, freezing cold, drought, flooding and cyclones.