Name: メガシャークはまだ存在するのか？(featuring Sam Kean) - 反応 (Do Mega Sharks Still Exist? (featuring Sam Kean) - Reactions)
Uploaded: 2021-01-14T05:23:29.000Z
Duration: 3 min 33 s
Description: VoiceTubeの動画で発音を聞きながら英語表現を覚えよう！学べる英語：

This week, we’ve got a special video from  our friends

at the American Association of Chemistry Teachers,

Featuring Sam Kean, the best selling author

Instead of using evidence to prove a point,

pathological science use ambiguity as evidence

claiming that scientists don’t know everything,

and therefore there’s room for my pet theory, too.

In 1873 a research vessel called the HMS Challenger

set out from England to explore the pacific ocean

they revealed the biggest, most pituitarily

freakish five-inch shark teeth they’d ever seen.

paleontologists to belong to the long extinct,

The pathology started with the man- ganese.

It’s not clear why manganese galvanizes shark

teeth—that is, why thin layers of this metal

deposit themselves on the teeth over time.

the metal accumulates, and they deduced that

Evolutionarily, that’s an awfully short time.

And really, what’s to say scientists won’t

soon find one from ten thousand years ago?

In the 1960s, a few enthusiasts with Jurassic Park

imaginations grew convinced that rogue megalodons

Well, this myth suggested that megalodons

are supposed to be elusive, which gives people

layers of manganese were almost certainly

torn up from old bedrock beneath the ocean

floor and exposed to water only recently.

storytellers, and the megalodons in their

stories vary manically in size and shape.

Overall, such stories depend on subjective

evidence, it’s not plausible to conclude

available at fine book stores everywhere.

Head to teachchemistry.org and join the AACT.