Name: We Dissolved Fossils To Prove Dinosaurs Were Warm Blooded | Science Skills
Uploaded: 2022-07-08T17:15:34.000Z
Duration: 14 min 24 s
Description: Thousands of YouTube videos with English-Chinese subtitles! Now you can learn to understand native speakers, expand your vocabulary, and improve your pronunciation...

Jasmina: And you're going to be the second.

and we're about to see proof that she was warm-blooded.

So, here is our dinosaur and oversize collections.

Abby: That's Jingmai O'Connor, and she --

Not to brag or anything. Nah, I'm just kidding.

Abby: And one of the key questions she asks

with her research is why birds were the only dinosaurs

to survive the Cretaceous-Paleogene extinction.

and look at the dinosaurs closely related.

but we have a drawer full of bits of Sue.

The inside of the puzzle is harder to put together.

So these are like the inside puzzle bits.

that it's OK for us to do destructive analyses on.

can involve slicing or dissolving in acid.

You have to cut a piece of the bone, remove it,

It's a cost-benefit analysis essentially, right?

What are the questions you're trying to answer?

they demonstrated with a prehistoric bird bone.

Jingmai: You then take your little chunk of bone

that you've removed, and you drop it into resin.

And then this needs to cure for several days.

I mean, can you imagine playing Dungeons and Dragons

with dinosaur dice? Abby: Dungeons and Dinosaurs.

Abby: Then you glue your D6 to a microscope slide

I almost destroyed everything with the saw, actually.

Abby: At this point, it's too small to slice,

Abby: We're listening for that "shoog-shoog" sound.

Akiko basically uses finer and finer grinders,

Abby: I will try my best. Akiko: Yeah, I'll show you.

any major imperfections that might obstruct the sample.

pulling carpet out from underneath the block.

Even with your naked eye, you can learn about a specimen.

Jingmai: Yeah, it'll be much -- Abby: It looks like agate.

but those are the lines of arrested growth.

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We Dissolved Fossils To Prove Dinosaurs Were Warm Blooded | Science Skills

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present

metabolism

demonstrate