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They're down there, and they are going to be found sometime soon. what if they got? >> in the submarine itself, or on the ship? >> the submarine itself. >> they don't -- i mean, oxygen is the important stuff. obviously, after four days, water becomes problematic. food is probably not going to be particularly problematic. i could go up a couple days without food standing on my head. you know, they take down lunch, they take down water with them. so, obviously this is a crew that is gonna be very intelligent and know they are going to conserve their resources and make them last. they knew well t...

The ship? >> in the submarine itself. >> they don't -- oxygen important stuff. obviously after four days water becomes problematic. food is probably not going to be particularly problematic. i could go a couple of days without food standing on my head. but they take down lunch, they take down water with them, so obviously this is a crew that's going to be very intelligent and know they're going to conserve their resources and make them last. they knew well they had four days of oxygen although you don't really know what that really means. these are estimates and just guidelines. and you're goi...

Looking at actually harvesting it at sea and sinking it to the bottom of the ocean. and in that way, sequestering carbon that is, you know, used by photosynthesis in the seaweed, sending it to the bottom of the c, where it will be buried. and in that way, sequester that carbon to kind of chip away at the co2 buildup in the atmosphere. >> brian lapointe, thank you so much for joining us. appreciate it. >> you are welcome. thank you. >> up next, clashes and tear gas outside the home of pakistan's former prime minister imran khan, who police have been trying to arrest. he's speaking out about why...