If you decide to run for the leadership, you have to go through it with the people you love. But you also have to protect them and I am determined to protect my mum.
What's now urgently needed [to stop environmental disaster] is the international political commitment to take action to avoid dangerous climate change.
First, climate change is the greatest long-term threat faced by humanity. It could cause more human and financial suffering than the two world wars and the great depression put together. All countries will be affected, but the poorest countries will be hit hardest. Secondly, the costs of inaction far outweigh the costs of action.