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Around 10,000 years ago, somewhere in Africa, a microscopic parasite made a huge leap. With a little help from a mosquito, it left its animal host - probably a gorilla - and found its way to a new host: us.

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10 min PBS Digital Studios Returning Series TV-Y7 US EN Documentary

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The Snake Detection Hypothesis proposes that the ability to quickly spot and avoid snakes is deeply embedded in primates, including us - an evolutionary consequence of the danger snakes have posed to us over millions of years.

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10 min PBS Digital Studios Returning Series TV-Y7 US EN Documentary

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We often think of dinosaurs as either preying on other dinos or mammals, or as plant-eaters -- but in ecosystems today, those aren’t the only two options. So why would we expect dinosaurs to have only been carnivores or herbivores, with the occasional omnivore thrown in the mix?

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10 min PBS Digital Studios Returning Series TV-Y7 US EN Documentary

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As revolutionary as teeth were, they would go on to disappear in some groups of vertebrates. But why?

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10 min PBS Digital Studios Returning Series TV-Y7 US EN Documentary

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Do our modern horses descend from just one domesticated population, or did it happen many times, in many places? Answering these questions has been tricky, as we’ve needed to bring together evidence from art, archaeology, and ancient DNA…Because, as it turns out, the history of humans and horses has been a pretty wild ride.

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10 min PBS Digital Studios Returning Series TV-Y7 US EN Documentary

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Today, all mammals from humans to bats have five fingers or fewer. Yes, even whales, whose finger bones are hidden in their fins. Birds have four or fewer and amphibians get the best of both worlds, often having four digits on their “hands” and five on their “feet.” But no species of vertebrates have more than five digits, let alone eight!

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10 min PBS Digital Studios Returning Series TV-Y7 US EN Documentary

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There used to be SO MANY sharks...where did they go?

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1 min PBS Digital Studios Returning Series TV-Y7 US EN Documentary

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Dire wolves aren’t actually wolves but what they are might be even cooler.

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1 min PBS Digital Studios Returning Series TV-Y7 US EN Documentary

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Could humans survive during the Precambrian?

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1 min PBS Digital Studios Returning Series TV-Y7 US EN Documentary

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Don’t be fooled by convergent evolution.

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1 min PBS Digital Studios Returning Series TV-Y7 US EN Documentary

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Why do human knees suck?

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1 min PBS Digital Studios Returning Series TV-Y7 US EN Documentary

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And it’s been reported that one of the geologists started it on purpose?

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1 min PBS Digital Studios Returning Series TV-Y7 US EN Documentary

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The ecological niche of apex predators was empty on Hateg Island, waiting to be occupied by something large, mobile, and powerful enough to fill it.

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10 min PBS Digital Studios Returning Series TV-Y7 US EN Documentary

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1 min PBS Digital Studios Returning Series TV-Y7 US EN Documentary

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Would you have survived the K-Pg Impact?

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1 min PBS Digital Studios Returning Series TV-Y7 US EN Documentary

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A truly enormous ichthyosaur around the size of a modern sperm whale, reached its size within just a few million years of taking to the water - a blink of an eye in evolutionary time.

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10 min PBS Digital Studios Returning Series TV-Y7 US EN Documentary

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Thylacines are definitely extinct!

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1 min PBS Digital Studios Returning Series TV-Y7 US EN Documentary

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Hyenas weren’t always able to eat bones. In fact, only a few million years ago, they lived very different lives.

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10 min PBS Digital Studios Returning Series TV-Y7 US EN Documentary

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1 min PBS Digital Studios Returning Series TV-Y7 US EN Documentary

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The bird that evolved twice!

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1 min PBS Digital Studios Returning Series TV-Y7 US EN Documentary

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1 min PBS Digital Studios Returning Series TV-Y7 US EN Documentary

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1 min PBS Digital Studios Returning Series TV-Y7 US EN Documentary

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I will pass on the parasitic mind-controlling mushroom, thanks

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1 min PBS Digital Studios Returning Series TV-Y7 US EN Documentary

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We tend to think that evolution only goes in one direction— toward getting bigger and more advanced. But that’s not always the case. This tiny, simple animal, the Myxozoans, (yes, animal!) evolved from something bigger and more complex.

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8 min PBS Digital Studios Returning Series TV-Y7 US EN Documentary

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1 min PBS Digital Studios Returning Series TV-Y7 US EN Documentary

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While sour taste's original purpose was to warn vertebrates of danger, in a few animal groups, including us, its role has reversed. The taste of danger became something it was dangerous for us to avoid.

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8 min PBS Digital Studios Returning Series TV-Y7 US EN Documentary

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Only a handful of Denisovan fossils have been identified. In the absence of actual body fossils, it’s impossible for us to reconstruct their morphology, right?

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10 min PBS Digital Studios Returning Series TV-Y7 US EN Documentary

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1 min PBS Digital Studios Returning Series TV-Y7 US EN Documentary

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1 min PBS Digital Studios Returning Series TV-Y7 US EN Documentary

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1 min PBS Digital Studios Returning Series TV-Y7 US EN Documentary

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While we’ve been farming for around 10,000 to 12,000 years, the ancestors of ants have been doing it for around 60 million years. So when, and how, and why did ants start … farming?

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10 min PBS Digital Studios Returning Series TV-Y7 US EN Documentary

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A mysterious, large feline roamed Eurasia during the last ice age. Its fossils have been found across the continent, and it’s been the subject of ancient artwork. So what exactly were these big cats?

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9 min PBS Digital Studios Returning Series TV-Y7 US EN Documentary

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Fossil evidence suggests Diictodon used burrows to breed, and that a parent stayed behind to feed and protect their young. And the parent that stayed behind? It might’ve been the male.

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8 min PBS Digital Studios Returning Series TV-Y7 US EN Documentary

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There’s something weird going on at the Cleveland-Lloyd Dinosaur Quarry in what’s now Utah.

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1 min PBS Digital Studios Returning Series TV-Y7 US EN Documentary

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Does Homo erectus beat out Homo sapiens?

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1 min PBS Digital Studios Returning Series TV-Y7 US EN Documentary

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Sometimes modern problems require ancient, evolutionary solutions.

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1 min PBS Digital Studios Returning Series TV-Y7 US EN Documentary

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What was this ancient pup’s last meal?

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1 min PBS Digital Studios Returning Series TV-Y7 US EN Documentary

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The newest oldest saber-toothed mammal

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1 min PBS Digital Studios Returning Series TV-Y7 US EN Documentary

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In the quest to understand how evolution basically built the woolly mammoth, we may have found the blueprints for building them ourselves.

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8 min PBS Digital Studios Returning Series TV-Y7 US EN Documentary

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Paleodictyon, a hexagonal-patterned fossil, is a bit of a mystery. We don’t even know if it’s a trace fossil, or the organism itself. So… what could it be?

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11 min PBS Digital Studios Returning Series TV-Y7 US EN Documentary

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In 2003, microbiologists made a huge discovery. One that would force us to reconsider a lot of what we thought we knew about the evolution of microbial life: giant viruses.

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10 min PBS Digital Studios Returning Series TV-Y7 US EN Documentary

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Microbiology goes macro with a new giant bacterium!

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1 min PBS Digital Studios Returning Series TV-Y7 US EN Documentary

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Spinosaurus had dense bones!

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1 min PBS Digital Studios Returning Series TV-Y7 US EN Documentary

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Guemesia: a new no-arm dino

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1 min PBS Digital Studios Returning Series TV-Y7 US EN Documentary

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This giant millipede was the largest known invertebrate to ever live on land. So how did it get so big??

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8 min PBS Digital Studios Returning Series TV-Y7 US EN Documentary

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Despite the profound changes we’ve made here in recent history, the epic saga of Los Angeles' natural history is still visible - and even striking - if you know where and how to look for it.

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14 min PBS Digital Studios Returning Series TV-Y7 US EN Documentary

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Today, billions of people around the world start their day with caffeine. But how and why did the ability to produce this molecule independently evolve in multiple, distantly-related lineages of flowering plants, again and again?

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11 min PBS Digital Studios Returning Series TV-Y7 US EN Documentary

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One of the biggest earthquakes humans ever experienced happened around 3800 years ago in what's now northern Chile.

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1 min PBS Digital Studios Returning Series TV-Y7 US EN Documentary

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We have no idea where they were all this time, or who stole and returned them and why.

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1 min PBS Digital Studios Returning Series TV-Y7 US EN Documentary

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Flesh-eating bees exist!

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1 min PBS Digital Studios Returning Series TV-Y7 US EN Documentary

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Archaeologists have discovered an ancient art workshop

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1 min PBS Digital Studios Returning Series TV-Y7 US EN Documentary

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There is one - and only one - group of mammals that doesn’t have alpha-gal: the catarrhine primates, which are the monkeys of Africa and Asia, the apes, and us.

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9 min PBS Digital Studios Returning Series TV-Y7 US EN Documentary

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Mystacodon is the earliest known mysticete, the group that, today, we call the baleen whales. But if this was a baleen whale, where was its baleen? Where did baleen come from? And how did it live without it?

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11 min PBS Digital Studios Returning Series TV-Y7 US EN Documentary

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This fungus was actually manipulating ants’ movements, forcing them to do something they’d never ordinarily do, something strange, yet specific…

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9 min PBS Digital Studios Returning Series TV-Y7 US EN Documentary

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Did you know that fossils can get sick? – Specifically with Pyrite Disease

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1 min PBS Digital Studios Returning Series TV-Y7 US EN Documentary

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Disaster in the great plains!

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1 min PBS Digital Studios Returning Series TV-Y7 US EN Documentary

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80 years ago, a bunch of fossils of ancient humans disappeared.

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1 min PBS Digital Studios Returning Series TV-Y7 US EN Documentary

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Congrats! You just found a wombat burrow. And the cubes are its poop.

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1 min PBS Digital Studios Returning Series TV-Y7 US EN Documentary

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Wisdom teeth can be such a pain

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1 min PBS Digital Studios Returning Series TV-Y7 US EN Documentary

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Paranthropus got chomped by a leopard

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1 min PBS Digital Studios Returning Series TV-Y7 US EN Documentary

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We didn’t always wear clothes!

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1 min PBS Digital Studios Returning Series TV-Y7 US EN Documentary

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Ancient sperm whale heads belonged on every shark-cuterie board

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1 min PBS Digital Studios Returning Series TV-Y7 US EN Documentary

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Mercury, Venus, and Mars are all super low on water – so where did ours come from and why do we have so much of it? We think our water came from a few unlikely sources: meteorites, space dust, and even the sun.

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12 min PBS Digital Studios Returning Series TV-Y7 US EN Documentary

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Around the time that some of our fishapod relatives were crawling out of the water, others were turning around and diving right back in.

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10 min PBS Digital Studios Returning Series TV-Y7 US EN Documentary

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We might’ve been wrong about how this saber-toothed cat looked

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1 min PBS Digital Studios Returning Series TV-Y7 US EN Documentary

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Sometimes evolution is completely predictable.

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1 min PBS Digital Studios Returning Series TV-Y7 US EN Documentary

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Shanidar 1 got by with a little help from his friends

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1 min PBS Digital Studios Returning Series TV-Y7 US EN Documentary

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Here are two ways to get a fossil species named after you.

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1 min PBS Digital Studios Returning Series TV-Y7 US EN Documentary