From the Archean Eon to the Holocene Epoch, check out this SciShow mini-series for a primer about life on earth before heading on over to https://www.youtube.com/eons for a deep dive.
Hosted by: Stefan Chin
Part 1 - Survival is Hard: 0:41
Part 2 - When Life Exploded: 9:34
Part 3 - Dinosaur Time!: 19:46
Part 4 - Rise of the Humans: 28:14
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Well, that's an incredible number of factors that have come together at the right time for our species to arise.
Beyond grass coming at just the right time, there's the fact that the size of our planet is in a goldilocks size (large enough to hold an atmosphere, small enough that we can escape the gravity with chemical propulsion), the distance of the moon being perfect for regular solar eclipses and tidaly locked ... Either the simulation argument is correct or we really are one of the first species in the galaxy or perhaps the universe to get to this point.
People rarely think that all the species we know about during these ancient times barely reach 1% of the actual number of species that evolved during this time. All the information we get is from fossils and they only form under specific conditions, not to mention all the fossils that were destroyed by numerous reason over time ... Makes you wonder what horrific/amazing things roamed our Earth and we will never find out about it .
you also forgot to mention that our moon has an affect on how hot/cold our earth is. all those years ago the moon was very close to the earth causing it to be alot hotter then it is today. The further the moon is the colder the earth gets. Thankfully the moon is not leaving us at a rate which we need to fear.
I want to be the first to point this out to whoever deletes comments around here. When you start a show out with the 4.65 billion year garbage, you absolutely show how behind the times you guys are. What the creator Yahweh did to honor his house with the Gematria which is brought out only by his priests at the place he chose to place his name (deut 12:5) is unmatched and will be the greatest wonder ever presented to man bar none. Trillions of stamps of approval and agreement is what I'm talking about which no religion on earth can claim. If you are clueless as to what I'm saying, then you are going to be late and will surely arrive in the wrong attire. You have enough info in what I wrote you can find it out if you simply do the research, the rest is up to you, but I promise you will have cake on your face if you don't figure out what I'm talking about.
And soon you will find out that your plaid shirts didn't elevate your wisdom or knowledge one point and you were just a bunch of naieve kids who swallowed a bunch of lies from birth. One day soon when you find out that the creator himself is against doctors and frauds like einstein and all liars really, then you will become human, when you yourselves join those you make fun of today. I'll be there, it will be awesome, buckle up
Are you auctioning cattle or producing educational content?
Those dots and spaces between letters in books have an equivalent in spoken language too. Try reading a book without them? That is this video.
I love PBS Eons Series but this is unwatchable because every sentence is crashing into the next. It's like car insurance adverts on the radio. As annoying and unintelligible.
Sack your editing team. Ask for the unedited rushes back. Repost with natural pauses intact.
How can all this happen from NOTHING, A big random Bang. Also where did this material come from? Also how did you know the earth is billions of years old? No observable solid evidence. All this can't come from nothing. Intelligent design makes more sense
Sorry, just had to turn it off at 3:05. This topic requires more pause, reflection and articulation of the subject. While the content is good, the delivery at 200mph without pausing, reflecting on the subject not letting your listeners absorb the content is not good. Your videos have potential, but please slow down. Thank you!
I am curious if species can adapt to increase there life. Why can't homosexual adapt? I am not trying to be hateful. You have creatures eating one another so the prey evolved to become faster and what's hunting the prey also evolved. So why can't homosexual evolved and be born into a sexuality they fine appealing?
My biology teacher at school did not except evolution. And although she taught it to us cause she had to, we also had to listen to her comments that "yeah, for me that seems impossible", "it is strange, but that's what the book says".
so sad :(
Could the Indohyus major have gone into the sea, because feeding there was easier then on land, due to the ice age created by the impact of the meteorite? I'd imagine that life forms in the water were not impacted as bad as the life on land. Hence the Indohyus major went into the waters to hunt, and evolved into the whales of today. Does that sound about right, or am I missing something?
WHAT?! you sir are wrong the Earth is only 5000 years old and a bearded space wizard created us in his image and sent his son to become a zombie to make sure we all knew whats up...
ALSO when you say "zircons" I'm sure you actually meant Christ crystals
ALSO ALSO everyone knows there are only two "era's" of Earth and they are the not dead Jesus times and waiting for dead but not dead Jesus times(now) but I'll forgive you for these mistakes....
There is no mention of the influence of the tides due to the Earth's Moon in the evolutionary process. A number of species base their behavior and development to this gradually changing lunar cycle. Currently this cycle is 28 "days" with its current distance from our planet; previously, it is less and the tides may be higher & more frequent.
Should do a show based on Neil Adams theory of a growing earth and how ancient fish fossils are all found in the land and not in the ocean. Meaning that once the ocean was in top of all the continent's and only a small amount of land would of been visible. Look at all the core sample dates and put it in a computer program that takes away youngest core samples away from the old core samples and you can see all the continent's come together and fit perfectly . what is going on there? Did earth grow? So the oceans age slower due to being covered in water? Was earth once 3 times smaller? And did it hollow out? How could it get 3 times bigger if it didn't hollow out. There would be hundreds of miles of new space junk covering the planet of we grew that big because gravity pulled in stuff. Must of hollowed out. And how gravity works it kind of makes sence.
Hm Grraarrpffrzz I just mean that once the ocean was on top of all the continent's. Of course the mountain formed after. Otherwise how could it of been under water. If it formed early it would of never of gotten ocean life fossils in it. I'm just saying that when it was being fossilized there was an ocean only on the continent's. The ocean is only 170 million years old. That's in its oldest place. So 170 million years ago the ocean would of been covering the continent's . earth grew 3 times it's size over the last 200 million years. Just look at a map of the ages of the earth ground.
What if The Great Dying was actually a previous iteration of sentient life on Earth, and they, too, messed up their climate with shenanigans? o.0
While I'm sure that's not the case, it does lead to interesting thoughts about how a future sentient species might view our impacts on the Earth.
The RNA world hypothesis is well accepted by scientists. I dislike how you present information in favor of it as if it is an opposing view. Life had already evolved the sophisticated mechanisms for translating RNA into protein. And since RNA and DNA are very similar, but because DNA isn't as chemically reactive as RNA, it makes sense that evolution would build on an existing mechanism (RNA -> Protein) by adding a the transcription step to convert DNA into RNA. (DNA -> RNA -> Protein) Especially since there are still RNA viruses in the world today. It would be more complicated to develop a whole new method that could create protein directly from DNA, in one step. Evolution builds on and tinkers with existing systems.
totally agree. geochemical evidence from latest zircon analysis (terrestial, moon, mars, chondrite asteroids) is increasingly favouring the RNA world hypothesis over the DNA model as the starting point for life on earth (and potentially elsewhere).
i can recommend this extract from a lecture i watched recently (Stephen Mojzsis, Uni of Colrado) re the RNA WH, which locates this model within the broader context of crust, atmosphere and radiation interplay c 4.4Ma. Truly fascinating.
(PS. powerpoint is cut off but lecture text covers most gaps. research papers freely available on his homepage which fill in visual info gaps).
The amount of information we've learned in such a small time frame is awe-inspiring.
Thinking about the huge leap we made as a species really makes you wonder how things are going to change in the future. How far will we reach?
It's shameful how people are still killing each other over religious views or disregarding scientific evidence because it conflicts with something they were taught growing up. Times change, and i hope they change some more.
om k Because in science you cannot be sure of anything, but you continuously gather evidence to build up your understanding. Even _gravity_ is a theory, but you probably have a good mental model of how it functions (i.e. you can look at a block of steel and know it's going to have a stronger attraction to earth than a box of tissues before you even touch it.)
The class of drugs that Levitra, Viagra, Stendra, and Cialis belong to are called PDE5 inhibitors. They work by relaxing tight blood vessels, allowing more blood to surge into the penis and cause an erection, says Gregory Bales, M.D., an associate professor of urology at the University of Chicago.
The little pills do the trick for more than two-thirds of men with Viagra protects the heart (ED). They also work for guys who simply need them for a short time to get their “confidence back,” says Michael Eisenberg, M.D., director of male reproductive medicine and surgery at Stanford University.