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How and When Did the Dinosaurs Die? | VOLCANO OR ASTEROID?

Dinosaurs thrived in the warm temperatures and mild weather of what we call the Mesozoic Era. But 66 million years ago, the world’s climate drastically changed. Earth became like a Zach Snyder film—much colder and darker. Plants died, food became scarce, and three-quarters of the creatures on Earth—including most of the dinosaurs—went extinct. We still…

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Dinosaurs thrived in the warm temperatures and mild weather of what we call the Mesozoic Era. But 66 million years ago, the world’s climate drastically changed. Earth became like a Zach Snyder film—much colder and darker. Plants died, food became scarce, and three-quarters of the creatures on Earth—including most of the dinosaurs—went extinct.

We still debate what caused this relatively sudden change in climate. Two popular theories are an asteroid strike and the eruption of a giant volcano.

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#dinosaurs #chicxulub #asteroid #volcano #trex

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17 Comments

17 Comments

  1. Jack Jammen

    September 26, 2019 at 7:20 pm

    Will we be able to ever say roughly how much methane the dinosaurs put into the atmosphere?

    • srdavis37

      September 29, 2019 at 11:18 pm

      No. Of course not. We can’t even guesstimate how many dinosaurs there were. Remember, we only know of the dinos whose bones fell in just the right spot under just the right conditions to become fossils. There may have been entire branches of species that we haven’t discovered yet – or never will.

    • Jack Jammen

      October 1, 2019 at 5:27 pm

      srdavis37 How about layers of sediment, that shows the atmospheric conditions of their end times?

  2. BnORailFan

    September 27, 2019 at 12:51 am

    We’re all paranoid of a killer asteroid impacting the earth in the near future but we probably wouldn’t be here now if one did in fact impact the earth 66 million years ago.

  3. nickrich56

    September 27, 2019 at 6:41 am

    I guess out of these 2 choices volcanic activity is the best bet since big space rocks are far away and volcanoes are close.😏

  4. Adam Jenssen

    September 27, 2019 at 8:34 am

    The answer is very plain and simple. <—— This is how they died, and this is when they died.

  5. Purbita Saha

    September 27, 2019 at 3:17 pm

    Birds are dinosaurs!

    • JayD 05

      September 28, 2019 at 7:19 am

      Thank you for saying that

  6. Þorsteinn Sigurðsson

    September 27, 2019 at 6:49 pm

    it is called loss of atmosphere!!! geniuses! 😉

  7. JayD 05

    September 28, 2019 at 7:20 am

    Dinosaurs never died out yo ever heard of birds

    • JayD 05

      September 30, 2019 at 2:03 am

      No that’s just a translation of words Plus that guy you’re talking about he said all that stuff over 100 years ago when everyone thought they were big lizards now more than 100 years after that we have more knowledge of these amazing *not terrible*animals

    • MGTOWHub Project

      September 30, 2019 at 2:24 am

      @JayD 05 Yes, we all know the purple-green cuddly Barney. I think we may get lucky again and get some more Dino soft tissue that did not mineralize after 65 million years by some miracle and that can be sequenced. We do have some full DNA sequences of some birds. I predict that when compared, the idea that avians are dinosaurs would be laid to rest. The most likely case is that there is a remote common ancestry, but that is all.

    • JayD 05

      September 30, 2019 at 2:31 am

      Too bad we will most likely never get dinosaur DNA because DNA doesn’t last that long so with all the evidence we have now Points to birds being dinosaurs

    • MGTOWHub Project

      September 30, 2019 at 3:07 am

      @JayD 05 Well, collagen from T Rex soft tissue says “tastes like chicken”, because that seemed to be closest. However, no one compared it with extant reptiles. Maybe “tastes like gator” would be closer.

    • JayD 05

      September 30, 2019 at 1:18 pm

      Yeah but there’s no evidence of that so far what fits best with all of this is that birds are dinosaurs maybe one day will find some dinosaur DNA that is not broken that much and we will finally see whos right here

  8. Robert Flinn

    September 28, 2019 at 9:10 pm

    The 2 camera effect, with the speaker looking at the other camera, is distracting and not needed, and is annoying.

  9. Richard Hopkins

    October 25, 2019 at 9:07 am

    Like you said, that meteor was 6 miles across.. The Earth is 8 THOUSAND miles across. It would take 1, 300 of those meteors to span the entire diameter of earth. If the Earth was the size of a basketball, that meteor would be about half the size of a grain of rice. That space rock was tiny Compared to Earth, and it wiped out like half the planet. Let that sink in for a minute

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The Buried Treasure That Took Us To The Moon – They Never Told You

The Space Race, the Cold War, and the Moon Landing all have an origin story connected to a small, obscure silver iron mining operation in the mountains of Lower Saxony in Germany – and it’s such a complex, unbelievable tale that it exposes our most dangerous intersections of science and morality. 14 tons of buried…

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The Space Race, the Cold War, and the Moon Landing all have an origin story connected to a small, obscure silver iron mining operation in the mountains of Lower Saxony in Germany – and it’s such a complex, unbelievable tale that it exposes our most dangerous intersections of science and morality.

14 tons of buried paper determined the fate of the world and kicked off humanity’s exploration of space.

We already know the end of the story: we know about Sputnik and Apollo 11, we know about Werner von Braun, and we know about Operation Paperclip. But pulling the threads of NASA and the Soviet Union’s Vostok program unravels an unknown World War II race between trucks and time, a struggle of secrets and survival, and a twist-filled tale of man, mind, and morality.

What you need to know is that story’s beginning – and if you don’t know it already, that’s because they never told you.

#spacerace #coldwar #science #history

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Planets As Animals – To Scale 3D Mass Comparison

If Earth is a labrador dog and Venus is a human child, then gas giants like Saturn and Jupiter must also match masses with their own animals… like an African forest elephant and a herd of 7 giraffes. You can understand the real scale of vast celestial bodies by comparing their relative sizes to animals…

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If Earth is a labrador dog and Venus is a human child, then gas giants like Saturn and Jupiter must also match masses with their own animals… like an African forest elephant and a herd of 7 giraffes.

You can understand the real scale of vast celestial bodies by comparing their relative sizes to animals on Earth that we’re familiar with — and then you can see them all in 360-degree 3D animation. We’ve paired the real scale of all the planets in our solar system to a range of small and large animals worldwide, like Pluto as a tiny black rat and Mercury as a kitten — and of course, the Sun, which by comparison to the planets has a scaled mass of 78 blue whales.

The cosmos is everywhere, all around us, all the time… it just depends on your perspective.

See you in the future!

#nasa #space #comparison #solarsystem

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Popular Science

Why Do We Put Holes In Our Head?

The $15,000 A.I. from 1983: Scraping, grinding, or drilling a hole through the thick, hard skull that evolution developed to protect our most sensitive contents might be one of humanity’s worst ideas — and also one of our best. We have no idea how it started, or why the first trepanner thought it would fix…

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The $15,000 A.I. from 1983:

Scraping, grinding, or drilling a hole through the thick, hard skull that evolution developed to protect our most sensitive contents might be one of humanity’s worst ideas — and also one of our best.

We have no idea how it started, or why the first trepanner thought it would fix anything. We just know that nearly every civilization worldwide has been drilling holes in heads for at least 7,000 years. Sometimes it actually worked. Sometimes it… didn’t.

Unraveling the impossibly-complex story of trepanning exposes a deep conceptual understanding of the relationship between the brain and behavior. It reveals our desire to take drastic measures to preserve the lives of people who are important to us, whether their value is practical or emotional. And the development of trepanning from Neolithic peoples to the Greeks and Incas and modern trauma surgeons takes a winding road through horrors and genius.

Trepanning evolved alongside our understanding of biology, physics, and even consciousness, with both its tools and practices reflecting our increasing knowledge and our changing attitudes toward health and human life.

Skull jewelry. Headache cures. Experimental psychosurgery. A few people who just wanted to chill. It’s all trepanning.

And the most remarkable thing about this seemingly-crude phenomenon is how it not only persists, but that it might actually be an important part of our plan for tomorrow.

So sharpen an old rock, measure your brainbloodvolume, and grab a watermelon to practice on.

We’ll see you in the future.

** SOURCES / FURTHER INVESTIGATION **

“Bore Hole” by Joe Mellen:

“A Hole in the Head: More Tales in the History of Neuroscience” by Charles Gross:

“Holes in the Head: The Art and Archaeology of Trepanation in Ancient Peru” by John Verano:

“Hippocrates, Vol. III” translated by Dr. E. T. Withington:

“The Popular Science Monthly,” September 1875:

“The Popular Science Monthly,” February 1893:

“A History of Medicine: Primitive and Ancient Medicine” by Plinio Prioreschi:

“A History of Human Responses to Death: Mythologies, Rituals, and Ethics” by Plinio Prioreschi:

The Wellcome Collection:

** SPECIAL THANKS **

Advisor, History of Medicine: Dr. John Dickey, UMass Chan Medical School

The Wellcome Collection, The British Museum, and others who generously license their material with Creative Commons

#science #technology #documentary #history

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