so which were knocking around as T. rex. The skull's the same type. ...toothed crap. But, like, you think about that. And that's like going to Africa and going, "Okay, there are lions. What's the next biggest predator? And it's like, well, there's a weasel about this big.
And these fossils tell us quite bluntly that yes, mammals were small. The mammals living with dinosaurs were small. There's no way around it. There were no woolly mammoths, their saber-toothed tigers, or whales, or anything like that back then. That's true. But just because mammals were small, it doesn't mean they were boring. It doesn't mean they were all generalized. It doesn't mean they were unimportant, quite the opposite. There was a great diversity of small mammals. There were mammals that could burrow, mammals that could climb and clamber, mammals that
But they're passive in the sense that they're using the whale's sonar to detect what the whale is doing. So when whales-- toothed whales in particular-- hunt, they emit some sonar that bounces back from their environment. And just as the whale is detecting the bounce-back, the sensors are able to detect as well.
But if you're going to watch something tonight, you're like, it's lowbrow stuff. Is there a saber-toothed tiger coming?
You couldn't avoid words just because they hurt. When Ley sculpted the gap-toothed ramparts of her keep, like castles from the kind of Schwarzwald fairy tale picture books where kids got eaten, Kai said, "You see, that's the tide line up there, where the seaweed's drying." When Ley carved a curtain wall with a bright blue trowel,
That's a good question. And moving on from my sweet-toothed youth, I never really planned to become a chef. I've been cooking all my life, and I enjoyed cooking at university and with my friends.
I called the South African Heritage Resource Agency, because there's actually cell phone coverage at the site, to get permission to take it out. They're there with saber-toothed cats.
The glaciers grew into ice sheets. And that helped drive the temperature of the entire world to be much cooler. Now, this was a long-term trend then that continued to happen for many tens of millions woolly mammoths, the Saber-toothed tigers. There were woolly rhinoceroses. There were armadillos the size of Volkswagen's. There were swaths that lived on the ground that stood 10 feet high. They
Unfortunately, it's not very effective. It's really good for running away from saber-toothed tigers, but not good for dealing with, I don't like the way I look in this dress. It's really not very helpful in that circumstance.
It happened in the 1960s. People will never go out to risk the world of saber-toothed tigers and converging technology companies.
And just as the whale is detecting the bounce-back, the sensors are able to detect as well. And we have the exact moment-- this is over a five-second period when a toothed whale is hunting a very small fish. So this is a fish that's maybe this big.
And sample answers included the great auk, good example. Smilodon, which is a saber-toothed cat, interesting. And somebody said, I'd like a pet velociraptor, please, which kind of intrigued me.
It was meant to help us when we are in danger-- real danger, real physical danger, like in the early days running from a spear of an opposing tribe or running from a saber-toothed tiger. Now I don't know about you.
And then they passed that on and so on. But in the past, our worst case scenario planning for this saber toothed Tiger was maybe once a week or once every 10 days in the modern day.
The glaciers grew into ice sheets. And that helped drive the temperature of the entire world to be much cooler. Now, this was a long-term trend then that continued to happen for many tens of millions see the movies, this is the time of Will Smith and Saber-toothed tigers. It only started about two and a half million years ago. And in fact, we're still in that ice age. It's just we are heating
And from six or five feet away from a whale's eye? And the thing to keep in mind with sperm whales, they're the largest toothed predator on the planet, and they possess the largest brain ever to exist on earth.
And he's found some really interesting things. One is that dolphins are extremely playful, particularly this one type that he studied called rough-toothed dolphins. They use play as a way of learning about the world and testing their physical limits, understanding the boundaries-- both the social boundaries of their pod and their
There's probably some evolutionary reason for that. I don't know. Probably because the first time we saw a saber-toothed tiger, we wanted to remember it for the next time and the next time.
And from an evolutionary standpoint, we were all actually programmed and predisposed to be more pessimistic. And that's because a very, very long time ago, our ancestors, who were running away from saber toothed Tigers. They imagined the worst case scenario.
Right. It was like, it was Mullins was coming in and he had to cover up and be like, and lo, the wooden toothed , salty
over time. Pythons, and elephants, Redwood trees, and lotuses, ancient tyrannosauruses, saber toothed tigers,
So say we're hunting and gathering, and out of nowhere, this saber-toothed tiger jumps out at you and with the intent to kill.
And just to complicate it, we now live not in the biological reality, where there are saber toothed tiger type threats, but we
Some evolutionary psychologists believe that for early man to survive, he had to be on the lookout for that saber toothed tiger, not
Now I don't know about you. When I think back, when I think way back, I can't remember last time I was running from a saber-toothed tiger. Most the time I'm running from myself.