Mr. Stone, earlier you were asked a few questions about adaptation to climate change. We're definitely not going to ask you to look into a crystal ball. However, you raised an interesting point. You said that we would need imagination to address that situation. Can you clarify your thinking?
Currently, under suggested policies and approaches — they were mentioned earlier — we're trying to limit our dependence on fossil fuels by turning to renewable energies; we're examining energy efficiency options and looking for new technologies such as carbon capture, and so on.
You don't think that's enough. Does that mean we have to do more? Should we invest in research? How do you see the challenge, not in order to make the transition, but in order to really turn the page on upcoming challenges?