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Science Friday

Utah National Monuments, North Carolina Coal Ash, Asteroids. Sept. 28, 2018, Part 1

Science Friday

Science Friday and WNYC Studios

Natural Sciences, Wnyc, Science, Friday, Life Sciences

4.4 • 6.3K Ratings

🗓️ 28 September 2018

⏱️ 46 minutes

🧾️ Download transcript

Summary

Back in December, the Trump administration announced reductions to two of Utah’s national monuments: Grand Staircase-Escalante, which runs from the Grand Canyon to Bryce Canyon National Park, and Bears Ears, newly established by the Obama administration just a year before. The reduction opened up nearly 2 million acres of previously protected federal land to fossil fuel and mineral exploitation, angering Native Americans, for whom the land is historically and spiritually significant, as well as environmentalists, archaeologists, and paleontologists.   Then, just this week, it was announced that a group of lawsuits to reverse the cuts would remain in federal court in Washington, D.C., rather than move to Utah, a decision the plaintiffs are celebrating. As the legal process continues, scientists are waiting to see what will happen to the newly excluded acreage, which still contains hundreds of thousands of sites they consider important. Will the Department of the Interior open the land completely to oil and gas extraction? And what specimens—ancient dinosaurs, mammals, fish, and more—could be lost? Two paleontologists and a law professor discuss the implications.  After Hurricane Florence hit North Carolina, historic flooding caused several dam breaches late last week—leading to a coal ash controversy. Now, an ongoing disagreement ensues between environmentalists and industry representatives about the levels of coal ash in the Cape Fear River near Wilmington, North Carolina. Last week, the Japan Aerospace Exploration Agency, also known as JAXA, landed two rovers on the asteroid Ryugu. The Hayabusa2 mission will explore the surface of the asteroid, blast an impactor into it to study the core, and return to Earth with samples. And, Science Friday video producer Luke Groskin talks about his visit to a lab where scientists are mixing up recipes for asteroids here on Earth to help researchers test rovers for future missions. Plus, geologists and archeologists debate a new potential geologic age, starting around 4,200 years ago.

Transcript

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0:00.0

This is Science Friday. I'm Iroflato. Coming up, the endangered fossil treasures of Utah's

0:06.2

newly slimmed down national monuments. We'll talk about the potential loss of important fossils at

0:12.4

Grand Staircase and Bears' ears. But first, there are around 100-named ages in geology.

0:19.5

You know all those, if you're a geologist, my heart goes out to you to remember all of these.

0:24.4

And now a recent proposal wants to add a new one, dating around 4,200 years ago.

0:30.1

It has set off a debate between geologists and archaeologists about what the ancient world really was like back then.

0:55.0

So I'm going to mean now to talk about that and other selected short subjects in science. Is Annalie Newitz? She's science journalist and book author based in San Francisco. She joins us from KQED. Welcome back. Hey, thanks for having me. I know this is one of your favorite subjects, Anna Leith. Right, right? Yes, it is. So what is this debate about?

0:56.0

Who is saying we need a new geological age and why fill us in on this?

1:01.0

So we actually do have a new geological age.

1:04.0

It's called the Megalayan Age.

1:06.0

It's named after a state in India.

1:09.0

And as you said, it starts about 4,200 years ago, and it goes up into the present.

1:14.7

And it's been the source of incredibly bitter debates between geologists and archaeologists

1:21.7

because the way that geologists decide that there's a new age on Earth is that they have to identify

1:29.3

some kind of huge event that's changed the ecosystems of Earth to kind of justify, like,

1:35.3

all right, now we're in a new age here.

1:37.3

And so some of these events are things like ice ages or, you know, a meteorite hitting the Earth,

1:42.3

things that we recognize as kind of catastrophic.

1:44.8

So for the Megalayan age, what geologists argue is that there was a global drought that

1:50.8

affected the course of human civilization. Because remember, this is a period when we actually

1:55.1

have human cities and writing and people are kind of doing their thing. And what archaeologists

2:00.3

are saying is, no, actually, we don't really have evidence that there was a drought that was altering civilization.

...

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