[Baldwin:] Talk about landing the big one. It astounded this Marine. Jeff Fangman caught a great white shark, taking nearly a half hour, wrestled the thing ashore. Now we have video proof, though his wife apparently wanted to keep her distance, and I don't blame her.
[Unidentified Male:] Got it?
[Unidentified Female:] Yes. Oh, my god! Look at it. Whoa! Oh! Oh, my god!
[Baldwin:] No, thank you. By the way, it's illegal to catch a great white, so this guy, after toying with its fangs, quick set it free. And now this, hidden underneath Yellowstone National Park, right, now, is something that has shocked scientists. These are just super cool pictures, this super-volcano with a cavern of magma far bigger than anyone had predicted, in fact, so big that scientists say an eruption would be catastrophic. So, Chad Myers, we talk to you, of course, about super-volcanoes. They knew it was there, but can you explain how the hot springs, the geysers, the study has just discovered the actual size. How big is this thing?
[Chad Myers, Ams Meteorologist:] We have always known it was a caldera. We always knew it was super-volcano under a weak spot, a thin spot in the crust where the magma is close to the surface, between maybe a mile and 10 miles, depending on the point of view there. We always knew it was there. But up here in the northwest part of Wyoming, we now believe it's 1,000-square miles, 50 miles one way by 20 miles the other way, and a magma chamber below the surface of 100-cubic miles of molten rock. And you ask, how do we do this? How do we know? The scientists at the University of Utah have been watching earthquakes around the area, and they know that the seismic wave will go through a molten rock slower than a solid rock. So if you look at these signals the way they look at these signals, and they know that below this magma chamber, below this caldera right here, there's molten lava down here. Now, this thing erupts about once every 700,000 to 800,000 years. The last time it erupted was 640,000 years ago, plus or minus a couple of decades.
[Baldwin:] Huh-oh.
[Myers:] So I think we're OK.
[Baldwin:] You think?
[Myers:] We're about another 160,000 miles unless stem cells can keep me alive for 100,000 years, I don't think that's going to happen. I don't think we're going to see this thing erupt, but it's always possible. Mother Mature does what it wants, you know?
[Baldwin:] I know. She sure does. Cool pictures, though. Thank you for the explanation, as always
[Myers:] You're welcome.
[Baldwin:] our resident scientist here on CNN. Quickly, you need some cash for your holiday shopping? You might want to pick up a Mega Millions lottery ticket. Last night, no one drew the winning numbers to the top prize. So, now, of course, the jackpot has further soared. The prize is now worth about $400 million, or do the math, we're talking a little more than $200 million before taxes, if you so choose that lump sum. Lottery officials say this is the second-largest Mega Million jackpot ever. The next drawing is this Friday. I'm Brooke Baldwin. Thank you so much for being with me. I'm back on tonight, CNN at 11:30 Eastern, 8:30 Pacific, with "In Case You Missed It." Now, "THE LEAD" with Jake Tapper begins now.