Thank you, Mr. Chair, and thank you to both witnesses.
Dr. Buhr, you talked earlier about what I will call an input, when you talked about seeing this challenge in front of us concerning 2050. One of the inputs you talked about is the scarcity of water. Could you speak not to the scarcity per se, but to what sort of research we need to do if we indeed have a scarcity of water? Plant life doesn't grow well without at least some. The odd cactus does not do badly, but I don't know that they're very edible. Some are, I suppose, but the spiny ones don't seem appetizing.
At the same time, rather than coming back to ask another question, let me ask this. You talked about the waste stream, and I am quite interested in it. It is a less glamorous aspect, perhaps, of areas in which innovation and research are needed, but one which seems to be—no pun intended—the low-hanging fruit for science and innovation to capture.
What do you see as specific things that we should be looking at in those two specific areas around research and development?