Updates from the Past and the Future

Inquiring Minds

Science, Society & Culture, Neuroscience, Female Host, Interview, Social Sciences, Critical Thinking

4.4 • 848 Ratings

🗓️ 25 November 2021

⏱️ 23 minutes

🔗️ Recording | iTunes | RSS

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Summary

In today's up to date episode, Adam Bristol is back to highlight three scientific papers that have caught his eye lately. The first two are about our evolutionary history of life on this planet, filling in some of the holes in the fossil record, and making some unexpected discoveries along the way. The third paper has us looking at potential biosecurity concerns in the distant future, which may actually arise earlier than expected given humans' exploration of planets. From the distant past to the possibly not too distant future, Adam’s got the news for you here today. Show Links: Inquiring Minds Podcast Homepage Support the show: https://www.patreon.com/inquiringminds See https://omnystudio.com/policies/listener for privacy information. Fossil evidence unveils an early Cambrian origin for Bryozoa Crab in amber reveals an early colonization of nonmarine environments during the Cretaceous Planetary Biosecurity: Applying Invasion Science to Prevent Biological Contamination from Space TravelSupport the show: https://www.patreon.com/inquiringminds

Transcript

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0:00.0	You and Betty and the Nancy's and Bill's and Joe's and Jane's will find in the study of science a richer, more rewarding life.
0:10.6	Welcome to Inquiring Minds. This is a podcast that explores the space where science and society collide.
0:17.9	We hope to learn what's true, what's left to discover, and why it matters.
0:26.9	I'm Adam Bristol. Indre is off this week. She'll be back next week. I wanted to record for you
0:37.3	one of our up-to-date episodes.
0:40.0	You may know that up-to-date episodes are where Indra and I like to highlight some recent
0:45.0	scientific papers that we find particularly intriguing or thought-provoking. I want to describe to you
0:50.8	three papers from recent weeks that really caught my eye. The first two
0:55.6	will have us going deep into our evolutionary history of life on this planet, filling in some
1:00.8	of the holes in the fossil record and making some unexpected discoveries along the way. And the third
1:07.2	paper will have us looking into the future, what could be distant future,
1:11.5	but it could come earlier than expected with regards to Earth and humans' exploration of planets.
1:18.5	Let's start with evolutionary history.
1:23.6	I was particularly intrigued by a study that was published in the October 27th issue of nature.
1:30.3	It had to do with some of the holes in the fossil record from a particularly important time in the history of evolution on this planet, specifically the Cambrian explosion.
1:41.0	This is a epoch that is roughly bookmarked 550 million years to say 480 million
1:49.0	years ago. And it was a period of incredible speciation where entire phyla, which are animal
1:57.5	groupings, were conceived during this time.
2:01.9	Cordata, which is humans phyla, can trace its root back to the Cambrian explosion.
2:07.8	One of the persistent mysteries of this time, though, is that there are some very widespread
2:13.2	phyla that appear absent from the fossil record from the Cambrian times.
2:19.5	And the article by Zhang at all in this issue of nature focus on one of those phyla,
	...

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