It's both wonderful and utterly terrifying.

I loved the video and the tell on age of the show with the Pabst Blue Ribbon in a tin can instead of aluminum.

I was just thinking the same thing. It was made before geologists learned of snowball earth or any of the early mass glaciations. And the description of the Earth forming in an inferno of molten rock and gas with an image of Hawaiian lava bujbbling away gives the gist, but of course we now know a good deal more from the Theia collision to Jupiter wandering in and wandering out again.

@@sacredweeds for me the time click was the computer graphics

Koch Industries is a big supporter of Nova

I usually do too but this wasn't the one I'm used too though...

True indeed

😇

INDEED

I cut my TV documentary teeth on NOVA! I've been hooked since the first episode in '74, and love all the documentary content PBS gives us!! Thank you so much for NOVA full episode docs and may I request BBC's "How to Grow A Planet" narrated my Dr. Iain Stewart please? ❤😀🙏

That and both whether there is ice at the poles and the current position of the continents in the Northern Hemisphere surrounding the North Pole.

So do comets that hit Earth, as in the Younger Dryas period.

Yes, the global temperature change that we are experiencing now is one of the slowest in the earth's history!

Very very little has melted. Today the rise in temperatures have slowed to a halt. The temperature has not risen in twenty years. We prepare now to round the top of the 1100 year heat spike and fall toward the next cooler cycle, accelerated by the coming Eddie Minimum. You have to understand the temperatures have been falling for near 4,000 years now. During this time there has been a brief heat spike every 1,100 years. The Minoan Warming, the Roman Warming, the Medieval Warming and now a thousand years later the Modern Warming all have come exactly when expected and developed exactly as expected. As the cooling period begins harvests are expected to fail. Wide Scale shortage of food has been projected on the planet before 2030.

​@@scinanisern9845few people these days discuss these facts, thank you for bringing them to light here ❤

@@scinanisern9845you seriously wrote this during the #1 hottest and #2 hottest months on earth EVER recorded???!

Missing pull tabs on them PBR's......more like 70's. I grew up in the 80's and as a kid I remember the big deal it was when they switched from pull tabs on cans to the pop tops where the tab stayed attached to the tops. That was a huge deal when it came out...in the 80's so this doc is dated in the 1970's.

@@murdockdacoon2055 really …. Wow 😯 it looks too good for 70’s but point taken 👍🏽 It was genuine entertainment and educational then …. Now so much drivel out there! Bring back VHS 😊

​@murdockdacoon2055 I remember that! lololol

It's far more profitable to talk about "climate change"... Actual reality be damned.

So its 75 years more up to date than the data used by Shell, Texaco, and Exxon

At least the title doesn't contain the ridiculous TRshow dog-whistle word "insane."

​@@danbeaulieu2130😂😂😂

​@@JMDinOKCor "ridiculous" 😂😂😂

Or "facts that have scientists terrified"

Me, too. I find both the Paleolithic and human evolution fascinating. North 02 and Highly Compelling are two great channels here at You Tube. I recommend both highly.

Who was it who said, "I'm too intelligent to believe in climate change" ?

As well so are you

Yeah, that's right! I know this hypothesis. Did some presentation about this when I was student

They're all cold at that altitude. If they were climbing an active volcano, there would be a pretty good chance of finding warm rocks at high altitude 😂😉

snows don't melt from year to year as in non ice ages..over hundreds of years the build up becomes significant..or you could just ask John Kerry..he's the irrefutable expert on this..

Ask a third grader to explain the water cycle to you.

Continental ice sheets aren't created overnight. It takes years, maybe even thousands of years to accumulate. Neither do they disperse overnight.

Maybe the entire Alpide Belt. It runs from out in the Atlantic and includes the Pyrenees, the Alps, the Carpathians, the Caucasus, Tien Shan, Pamir, Hindu Kush and Himalayas. They all rose at about the same time.

Things have been updated a lot since 1994 - OMG that's 29 years ago!! Holy cow time flies! 🤯

flash flood that froze over really fast?

Your facts and point of view is highly questionable. And if it's rude for me - is a bullshit

@@SurvivorsStories that's unkind and disrespectful.

Whatever it was that chill certainly happened catastrophically quickly. Scientists don't like catastrophies, it makes them ideologically uneasy. Some are so dedicated at shooting anything catastrophic down, that there are some still trying to wave away the Dino impactor.

If a big meteor crashes into ice a few km thick, the blast wave will blow most of the air away from the region which would cause sudden blackout.

Your view is wrong. Read the science literature, visit the NASA Climate website, take a university course (like I did) in climate science, whatever. Opinions mean nothing when unsupported by the evidence.

Sure, but not relevant to my comment but maybe it was too obvious to note.

Your view? “Orbet?”

The planet has been cooling for near 4,000 years now and during this time there has been a brief heat spike every 1100 years. Like the Minoan Warming, the Roman Warming after it, the Medieval Warming after it, the Modern Warming today came exactly when expected and developed exactly how expected. Today we round the top and begin the slide down the falling side of the spike to a new and even colder period than before, known as the Little Ice Age. As this happens the Eddy Minimum is due, likely in the early 2030's. As we chill once again harvests are expected to fail. Global crop failure is forecast before 2030. If you were to measure the ice on the planet you would find that there has been more ice in the last few hundred years than in the last ten thousand all added up together. Never in the entire Holocene as this pattern of climate developed. The only time this sort of pattern has ever emerged is when the previous Interglacial Periods came to a close. It indeed does look like the Holocene is ending and today is warmest it will be for the next 100,000 years. Start a garden.

You're welcome ^^)

That's good for me!☺ I can help you with that

They want money. It's not about education. It's about profit.

@@nohandle62 Who?

That's what I'm talking about...

Pbr is good for Tibetan.

12000 years ago our suv's were much larger and used 10 times the fossil fuel we use today.back then fuel was almost $5 /gallon.

As soon as it started I was thinking….this must be old. Even the narrator’s voice seems 90s. 😳 I’ll have to look up a more updated video on the subject.

Odd, Al Gore was vice president at the time and you're saying that climatic change was not a concern at the time... fascinating. There are cartoon shows from the 1980s that had PSAs at the end, and climatic change... I mean Global Warming, was a topic of concern. You've obviously never seen Captain Planet have you.

​@@puppiesarepower3682 I knew about climate change way back in 8th grade, in 1970, when I read in our science textbook that 1) carbon dioxide in the atmosphere increases the greenhouse effect, and 2) carbon dioxide in the atmosphere was steadily increasing because of fossil fuels. Now, these bits of fact were presented on separate pages in the textbook, and there was no connection made between the two, but it wasn't hard to see the link and so in class, I asked the science teacher, "doesn't that mean the climate is going to get warmer and warmer on Earth?" And the science teacher thought for a minute and said, "yeah, you're right, it probably will, but that won't be for another hundred years, and then we'll all be dead!" Well, that was over fifty years ago, so, he was pretty close - in another fifty years the full force of global warming will be upon us. As to Captain Planet, no never heard of it, never watched it. If you were old enough to be paying attention to the news in the 1980s instead of watching cartoon shows, the news was full of Reagan's military buildup, the neutron bomb, the basing of nuclear capable Pershing missiles in Germany, and the massive protests against all that in favor of "world peace". In the midst of all that, Carl Sagan's group came out with the hugely influential "Nuclear Winter" paper in 1983, postulating that the dust from a global nuclear war would cause a massive global freeze. This pretty much drowned out whatever faint messages of global warming were out there at the time. In the 1990s, whatever Gore was doing as vice-president during the Clinton administration was swamped by the news media circus going on with the Clintons during that time. He didn't really make an impact until he came out with his movie documentary "An Inconvenient Truth" in 2006. That movie served as the clarion call that finally brought global warming to the forefront of public attention. By then, the Soviet Union had broken up, Shrub had declared Vladmir Putin to be "trustworthy", and the possibillty of a nuclear winter seemed remote. Today, despite Russia and North Korea constantly threatening to use nuclear weapons, people (other than the diehard preppers) still seem very blase about this possibility of a nuclear winter. A nuclear winter would actually be a pretty solid cure for the ongoing global warming.

Note that in the credits, at 55:12, we see, “© 1996”. That could probably be consistent with a first air date, at some outlets, in 1997.

Africa and South America separated much earlier (during the Mesozoic), before there Was a Gulf Stream. But the much more recent creation of the Isthmus of Panama (by volcanism) separated Atlantic from Pacific ocean currents and could have affected the Gulf Stream, and the amount of moisture available to form glaciers in Europe.

I imagine she’s known that for a long time.

It's called censorship .

​@@y4s563lol , only in America

Hear Hear !

Many people confuse "glacial period" with "ice age". An Ice Age is a long-term period (up to millions of years) during which multiple glacial and interglacial periods can occur. The program was about the long-term cause of the current Ice Age. They also touched on how glacial/interglacial periods match cyclical changes in the earth's orbit (and axial tilt and precession). Ocean sediment cores indicate that around 8 to 10 glacial/interglacial cycles have happened over the last 800,000 years. But on land, the most recent continental glaciation tended to "bulldoze" away the record of the previous ones (but not everywhere). The most recent cycle lasted about 100,000 years, and glaciation peaked around 26,000 years ago.

Yeah I saw that , guess humans stopped the ice age , lol

The atmosphere contains 415 ppm of CO2. Less than half a percent.

@@mattematsson554 And? If your claim is true, you concede that we've increased it drastically.

@@mattematsson554 And? Doesn't change the fact of what I first wrote.

nope. flat Earth needs to stay out of real science too...

@@paulmetrich87 you dropped your tin foil hat bro.

Thanks for advise!

That’s because the Milankovitch cycles are NOT currently having an effect on Earth’s climate, so why mention it? Moreover, those cycles affect earths climate on 100,000 year cycle, not the last 50 years in which the majority of our climate change has occurred from manmade CO2 emissions. And yes, they do know that the excess CO2 accumulations are from fossil fuels because they carry the C12 isotope signature, which can only come from fossil fuels.

@@ronaldjanert7456 my comment wasn't disputing modern day climate change as I am not a climate denier. The damage brought on by fossil fuels is indisputable. The video of cracking the ice age centered around the building of the Himalyas as the primary driver of the last ice age. Nowhere in the documentary did they mention the Malencavic Cycles. I found that fascinating.

@@douglashanlon1975 It’s not a matter of how long humans have been around burning fossil fuels. What’s at issue is HOW MUCH of it we’ve been burning, and HOW FAST. Before us, Earth’s Carbon cycle has been in BALANCE (i.e., equal amounts drawn out of the atmosphere vs. How much gets released naturally). that has kept our climate extremely stable for the last 8,000 years, and relatively stable for the last 800,000 years. The problem is, the Earth can only absorb a certain amount at a certain speed, and CO2 persists in the atmosphere from a 100 to a 1,000 years before it’s circulated back out again. That means that everything extra we emit ACCUMULATES year over year, the same way a bathtub fills up over time and eventually overflows under a dripping faucet when it’s not allowed to drain as fast as it’s accumulating. And that faucet’s been dripping faster and faster over the last 200 years. The greatest amount of accumulation of CO2 has occurred in only the last 40-50 years thanks to Globalization. That’s why it’s risen from 280 ppm to 419 ppm in so short a time. As for your argument about glacial and interglacial periods, they’re irrelevant to any discussions about our CURRENT climate situation. Why? Because those happen in roughly 100,000 year cycles in response to variations in the Earth’s orbit and axial tilt (Milankovich Cycles) and there are currently no appreciable changes that can even remotely, possibly have an effect on our current climate, and they most certainly can’t explain the speed at which the Earth is heating up. None. There is no natural explanation for the speed at which global warming is occurring. The science doesn’t match what we’re witnessing. Moreover, the isotopic signature of the carbon building up in the atmosphere proves the excess CO2 is human-caused because the ratio of C12 is increasing relative to C13, and that can only come from fossil fuels where it’s been shielded for millions of years from the ionizing effects of solar radiation.

The rhetorical question...

👍👍👍👍👍

so maybe you can contact the families of the dead firefighters from spain and explain that to them.

You can’t reason with any fanatic. Racing religion politics none can be reasoned with.

They don’t need to. The Milankovitch cycles are irrelevant, because at this time there has been no kind of changes affecting earths climate.

@@ronaldjanert7456 Who is talking about at this time? We are going back millions of years and this would certainly include Milankovitch cycles. That being said, I think it was more than just the Himalayas that caused the ice ages. We are still in one (tail end) actually, but global warming will take care of that.

link please

What if...

40k in round numbers. That's colloquial for latest (probably not last) glacial maximum, strictly speaking we *are in the ice ages* beginning aprox. 3M yrs ago to present, with relatively brief interglacial times like now, alternated with longer glacial periods. We are roughly 'due' for next glacial max, 'soon' to a couple thousand yrs out. We are on the cusp of tech/economic power to prevent next devastating event but CO2 probaly will not do the job, even a lot more than now in the atmosphere, it will at least marginally reduce the risk of mass plant extinction caused by dangerously low CO2 levels (meaning the end of everything that matters) that recent glacial max events have just skirted.

Your criticism is a straw man. Scientific conclusions become effectively "settled" when vast quantities of carefully collected evidence support them, and when no plausible alternatives can explain the evidence. This is the case with anthropogenic global warming, and climate scientists have been entirely professional and how they have addressed this question over the past 150 years.

you may catch up some day, give yourself some time to figure it all out and all.

@@peacenow42 put your mask back on and go back to sleep

@@revolvermaster4939 keep your mask off and help facial recognition AI.

Frolic and revel in your ignorance. Be proud of it! That's the way! Don't try to understand it! Be content and satisfied to know nothing at all.

It's awesome that they weren't frothing about global warming with every breath.

1999

@@77AbleArcher like you

A reasonable question . . . but where to find that information should be obvious: look in the •credits•!!! At 55:12, we see, “© 1996”. At the risk of giving offense, I have to say it seems baffling anyone would need help figuring that out.

Also the methane bubbling out of the permafrost which is melting at an alarming rate.

its from the early 2000's. 2003 I believe.

If you’re genuinely curious, try finding that information in the most obvious place: look at the •credits•. At 55:12, we see, “© 1996”. The real mystery is, why does anyone need help figuring this out?

@@ColumbiaB Nature and nurture are often irresponsible. Why we invented science.

@ColumbiaB +1 million credits for you for information for inattentive people. Thank you! Gosh...face palm

Prove it

wikipedia The causes of ice ages are not fully understood for either the large-scale ice age periods or the smaller ebb and flow of glacial-interglacial periods within an ice age. The consensus is that several factors are important: atmospheric composition, such as the concentrations of carbon dioxide and methane (the specific levels of the previously mentioned gases are now able to be seen with the new ice core samples from EPICA Dome C in Antarctica over the past 800,000 years); changes in Earth's orbit around the Sun known as Milankovitch cycles; the motion of tectonic plates resulting in changes in the relative location and amount of continental and oceanic crust on Earth's surface, which affect wind and ocean currents; variations in solar output; the orbital dynamics of the Earth-Moon system; the impact of relatively large meteorites and volcanism including eruptions of supervolcanoes.[57][citation needed] Some of these factors influence each other. For example, changes in Earth's atmospheric composition (especially the concentrations of greenhouse gases) may alter the climate, while climate change itself can change the atmospheric composition (for example by changing the rate at which weathering removes CO2). Maureen Raymo, William Ruddiman and others propose that the Tibetan and Colorado Plateaus are immense CO2 "scrubbers" with a capacity to remove enough CO2 from the global atmosphere to be a significant causal factor of the 40 million year Cenozoic Cooling trend. They further claim that approximately half of their uplift (and CO2 "scrubbing" capacity) occurred in the past 10 million years.[58][59]

@@shawnesantana575 it's called Malankovitch Theory

@@jeffreyhusack2400 theory.....is not proof

@@charliehorse43 Excellent answer! Thank you for being a spokesperson for science.

While yes we are, we are technically in the warm interglacial period of the ice age. CO2 famine? 😂 No... Plants are not starving for more CO2.

Realy interesting: did they know that at that days?

@@SurvivorsStories They should have. A lot of off-road vehicles have compressors just for that reason. Lower the tyre pressure in sand, then pump it back up for rock. It gives you more of a footprint, so the load is distributed over more area.