Showing posts with label Cc's video favorites. Show all posts
Showing posts with label Cc's video favorites. Show all posts

Monday, September 30, 2019

Martin Smith - Origins Ecdysozoan Body Plans - What a scientist sounds like.

Drawn by, Danielle Dufault

Before moving beyond the Edicarian and Cambrian Periods I want to finish with this wonderful talk by an enthusiastic paleontologist, Dr. Martin Smith’s.  He’s done some incredibly work detailing an accurate anatomy of that most exotic of poster species Hallucigenia, among others.  

His guileless enthusiasm for the fascinating details his work has helped uncover is a treat to behold.  Just as interesting is his descriptions of the debates and questions that scientists wrestle with as they strive to arrive at conclusions and work towards a general consensus, or keep on searching.  Below the fold I include screenshots and further information regarding Dr. Smith's work.
The origins of Ecdysozoan body plans

Palaeo cast  -  May 19, 2017

By Dr. Martin Smith, Durham University - talk given at University of Bristol

Thursday, September 26, 2019

Keith Peterson - Cambrian - Molecular Clock - What a scientist sounds like.

Professor Kevin J.Peterson gives a fun informal lecture at MDI Biological Laboratory's Science Cafe'.  Besides giving a good overview of the state of our understanding of Ediacaran/Cambrian's radiation event, I like it because of the way he acknowledges the provisional nature of our understanding and the importance of the arguments over the evidence that keep science moving forward.  He underscores how we learn from honestly evaluating our mistakes as much as our successes.  Below the fold I include key screen shots plus information from papers mentioned in this talk.  (For why I'm putting together this collection, please see this.)

MDIBL Science CafĂ© - Cambrian Explosion: Animals or Fossils?  Professor Kevin Peterson
MDI Biological Laboratory  -  August 21, 2013


Thursday, September 12, 2019

Prof. Christopher White - Historical Geology - What a Professor sounds like.


I’ve been wanting to get Professor White’s talks into this series for viewers interested in hearing a very good professor lecturing his class via the web.  He is a pleasure to listen to because he gets on point and stays on point.  White speaks clearly, concisely, conveying a great deal of information in a short period of time. Below the fold I've listed his entire lecture series with links.  Not for casual viewing, but if you want to seriously learn a few things about Earth's evolution give him a try.

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Wednesday, September 11, 2019

Liu, Carbone, Brasier, Corfield, Wood - Ediacaran Marine Ecosystem - What scientists sound like.

Here are some more excellent videoed talks discussing the Ediacaran Period before I move onto the Cambrian Period in this Pageant Earth's of Evolution.  

The first is an presentation by Alex Liu, the sound suffers from some unfortunate interference, still the talk is well given and worth hearing out.  The second features Calla Carbone at 2016 Royal Tyrrel Museum speakers series, while she reinforces Liu's message, she also expands with further insights into early ecological community development and the varied environmental niches that appeared.  She's a bit nervous, but considering she was a newly minted Masters at this point, it's an outstanding talk.  This is followed by an audio of a fascinating BBC Our Time Podcast conversation hosted by Melvyn Bragg with guests Martin Brasier, Richard Corfield and Rachel Wood.


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Ediacaran Biota marine ecosystems evolution


The Ediacaran Biota and the development of modern marine ecosystems

Monday, September 9, 2019

Mary L. Droser - Ediacara Biota - What a scientist sounds like.

There are many excellent videos about the Ediacaran Period in Earth's Pageant of Evolution - each speaker touches on aspects the others don’t.  It's what makes learning about this so fascinating, the endless surprises and aha moments.   
It's a reflection of the new appreciation that the dawn of animal evolution was way more complex and amazing than anyone imagined - that is, before the scientific evidence really started coming in these past decades.  No ID needed.  Makes me think I’ll be sharing a few more lectures focused on the Ediacaran before moving on to the Cambrian Period.  
This time I’m highlighting Professor Mary L. Droser because she does such a nice clear job of describing the variety and complexity that showed up in these oldest of creature communities.  Below the fold you'll find screen shots of key slides outlining her talk.

Mary L. Droser - Catching the second Ediacara wave: 

ecology and biology of the Ediacara Biota as recorded in South Australia

University of Adelaide | July 12, 2016

Prof. Mary L. Droser
University of California, Riverside, USA 

Sunday, September 8, 2019

Murray Gingras - 585 MYA animal tracks - What a scientist sounds like

Alrightie than, enough being distracted by chores and laziness - it's time to get this Pageant of Evolution rolling again.  I think I want to have some fun by simply selecting good lectures that follow in chronologic order from the Ediacaran and culminating in the Anthropocene and humanity's uncontrollable impulses that are driving towards an inevitable self-destruction.  If you laugh at that perhaps you need to learn about the progression of "civilization' these past few centuries and then stop to actually think real hard about trends and how they dictate the future.  Being blind to what's happening isn't going to stop it from happening.
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585-million-year-old tracks reveal evidence of the first animals on Earth



Saturday, August 24, 2019

Jeff Gee, Joanna Haigh - Earth's Magnetic Force Field - What a scientist sounds like


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This posting is dedicated to conveying a fact based appreciation for our planet’s protective magnetic “force field” with lectures from: 
Geoscientist Jeff Gee - Exploring Extremes of Earth's Magnetic Field
Professor Joanna Haigh - The Sun and Climate

… along with some awesome data driven visualizations, narrative is a bit on the melodramatic side, but hey, that's what folks want:
Earth's Magnetism in HD - Discovery Channel
Magnetism - Defending Our Planet, Defining The Cosmos - NASA Multimedia Science
Origins of the Earth’s magnetic field - CEOAS - Oregon State

Magnetism - Defending Our Planet, Defining The Cosmos
NASA Multimedia ScienceApril 3, 2017

Friday, August 23, 2019

David Bercovici - Origin of Plate Tectonics - What a scientist sounds like.

One aspect of this blog is all about my own journey of discovery through knowledge acquired from the global community of scientists over the course of generations.  
I do have strong opinions that are based on how I've processed the information I've accumulated so far.  Within that frame of reference, it always seemed self-evidence that our moon's close proximity to Earth during the first billion years had to have a hand in starting plate tectonics on this planet.  
I could not understand why geoscientists never discussed that aspect when writing about origins of plate tectonics.  It simply didn't make sense to me.
But, recently listening to scientists such as David Bercovici, I've come to appreciate many aspects of that situation I had no clue of.  Not that I've had any particular insights, but I have gained a world of appreciation for why the moon's tidal influence on the start of plate tectonic isn’t near as obvious as I was imagining.
It seems to me a great example of allowing facts to dictate my opinion.  I appreciate I possess a fraction of the knowledge someone like Bercovici has accumulated - thus if his words reveal flaws in my own thinking - it's my duty to understand him, not simply to dismiss him.  
As opposed to the agenda driven character, who is so self-certain that he allows his under-educated mind to conjure (and then believe) all sorts of fantastical under-informed rationalizations in order to dismiss the expert's knowledge.  
See, truth doesn't matter to the self-certain - pushing agenda over substance is their priority.
Whereas in serious science honestly acquiring evidence that helps us gain better understanding IS the goal - while ultimate certainty is unattainable.

Be forewarned the following is a talk given to his peers, so it's a peek into how scientists speak with each other, rather than the crisp public talks I usually like sharing.
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Professor David Bercovici Ph.D.
On the Origin of Plate Tectonics

Thursday, August 22, 2019

Caroline Beghein - Tectonics to Deep Earth Dynamics - What a scientist sounds like

Here Caroline Beghein Ph.D. gives a very nice general introduction to plate tectonics.
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From Plate Tectonics to Deep Earth Dynamics
Published on Sep 2, 2016

A Seismological Journey Inside the Earth.
2016 IRIS/SSA Distinguished Lecturer 
Caroline Beghein Ph.D., U.C. Los Angeles

Tuesday, August 20, 2019

Jason Morgan - history of plate tectonics - What a scientist sounds like

The Changing Landscape of Plate Tectonics
Geophysicist W. Jason Morgan
    
This talk gives a historical account of the developing science of plate tectonics, given by Geophysicist William Jason Morgan.
Although I'll admit I chose to include it as much for the introduction as for the interesting talk that follows.  You see, while most introductions have me pushing fast-forward, once in a while I’m stopped by something that resonates and I’ll pay attention.  The introduction to this video is an example.  Professor Jerry Mitrovica* delivers an enjoyable listen, while beautifully illustrating what a serious scientist is all about.
* Incidentally, he gives a great lecture in his own right: 
   
Jerry Mitrovica exemplifies the ‘scientific way’ - the passionate curiosity driven need to learn about our planet, based on honestly assessing all evidence and facts at hand, while striving to attain better information for yet more accurate understanding, always moving forward.
When listening to Mitrovica please notice his willingness to search out and examine the shortcomings and mistakes in his own, thinking, work and conclusions.  His respect for colleagues, even his “competitors” along with a respect for their substantive work - It’s because honestly learning about our planet as accurately as possible is the cornerstone to their work and careers.  (Why isn’t that aspect being loudly enunciated by writers?)

Monday, August 19, 2019

Plate Tectonics and Life - What Scientists Sound Like


Although I can't find quite the right video for this section, I do have a couple of excellent presentations by scientists to their colleagues.  It's more nitty-gritty than I usual share over here, but it is on the topic - along with being more wonderful examples of What Serious Scientists Sound Like.

I've also included three articles touching:
video - Origins: Earth’s Journey Toward Life - Carnegie Science
Plate tectonics may have driven the evolution of life on Earth
   Ross Large, John Long, July 15, 2015
Linking the rise of atmospheric oxygen to growth in the continental phosphorus inventory  Cox et al.  2018
Did Plate Tectonics Set the Stage for Life on Earth?
   Lisa Kaspin-Powell - Jun 7, 2018
video - Life with and Life without Plate Tectonics, AGU 2014

Recall geophysicist William Jason Morgan words:

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Origins: Earth’s Journey Toward Life
    
Carnegie SciencePublished on Jan 7, 2019

Saturday, August 17, 2019

Paul Hoffman - Snowball Earth explained - What a scientist sounds like.


The second and third paragraphs in my second Pageant of Evolution column seem too discombobulated in hindsight.  It’s a great example of writing before having one's proverbial ducks in a row.  But hey, I was distracted and rushed and we learn from our mistakes.

In any event, that’s why I chose Paul F. Hoffman to feature in this “What a scientist sounds like” - Tectonic and Sedimentary Field Geologist in the Department of Earth and Planetary Sciences at Harvard University, currently he is their Sturgis Hooper Professor Emeritus

His honors go back to 1977 and his published work on Snowball Earth goes back to 1998.  He is considered a foremost expert in Snowball Earth research and he gave a wonderful series of lectures for Earth Dynamics Research Group at Curtin University of Technology in 2016.  

Unless you’re a serious student or scientist much of this will be over your head, however much won’t be!  The outlines are easy to follow, and the complexities are fascinating to hear about, even if the nuances are beyond our comprehension.  At least one becomes aware of unimagined complexities, along with unimagined levels of scientific understanding.

I’m starting by embedding a shorter simpler overview that he gave at Mount Royal University, as the 2018 keynote speaker for the Faculty of Science and Technology Research Days.  Then I share links and poster highlights of his more extensive Earth Dynamics Research Group lectures, enjoy.


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Also, check out this treasure trove:

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(click on image for clearer view)

Paul Hoffman
Curtin University of Technology

Saturday, August 10, 2019

Michael Russell - Emergence, serpentinization engine, electron exchange - what a scientist sounds like

If you enjoyed Robert Hazen and Jack Szostak, then you’ll want to add Michael Russell since his talks compliments what Dr. Szostak was explaining.  Of course, what you get out of these lectures is proportional to how well you already know the topic.  That said, any intelligent curious person can still get plenty of fascinating insights and better appreciation for the complexities scientists have come to understand by listening and then doing a little side research for themselves.  It's not like the fundamentals themselves are that difficult, it is the details that get impossibly complex and difficult to grasp.

The key is an honest curiosity to become aware of the world we live in.

With that I present another another couple lectures about the physics of Life’s folds within folds of cumulative harmonic complexity flowing down the cascade of time.  Before getting to my next essay.


Wednesday, August 7, 2019

Jack Szostak - Origins, geochemistry to biochemistry - What a scientist sounds like.

Whereas Robert Hazen went after the origins problem from a mineralogist's perspective, Professor of chemistry and chemical biology, the 2009 Nobel Prize laureate Jack Szostak goes at it from his expertise, the biologist’s perspective.  
Both have found that they needed to combine their expertise and to reach out to other branches of science in order to constructively tackle the problem of understanding the transition from geochemistry to biochemistry and then to full blown life as we know it.
He is another excellent public speaker so his talks are a joy to listen to.  Here I share a collection of seven informative videos of his talks along with some bio information.

Jack Szostak: The Early Earth and the Origins of Cellular Life


MoleCluesTVPublished on May 16, 2019  (32:11 min.)

Lecture by Dr Jack Szostak, 2009 Nobel laureate in Physiology or Medicine, at the Molecular Frontiers Symposium "Planet Earth: A Scientific Journey", at Stockholm University May 9-10, 2019.


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The Szostak Lab

Sunday, August 4, 2019

Robert Hazen - Origins, mineral evolution - What a scientist sounds like.


In order to get a change of scenery I spent the summer of 2006 working north of Boulder and living in a Teepee.  My transportation was mainly my bike and Longmont was a better destination than crowded Boulder.  It also sported a very nice library with a big non-fiction audio book collection, which was very exciting considering I’d long run out of decent nonfictions at my home town fiction loving library.  Browsing through their rows of “The Great Courses” series, I spied something new "Origins of Life."

Origins of Life
Professor Robert M. Hazen, Ph.D.
George Mason University
The Great Courses.com - course 1515

With a title like that, I couldn’t say no.  It turned out to deliver one astounding surprise after another, along with a few revelations to boot.  I needed to listened a second time before returning, despite its 12 hour length.  Since then I've made a point of listening to pretty near every YouTube lecture featuring him and there are many. 

I also liked that this new understanding also vindicates my own reflexive disgust at having read some serious scientists assume that for the first few billions of years nothing happened on Earth.  It seemed a ridiculous notion to me and so it was.  Just like junk DNA, or wasted brain matter, nonsense - it was simply that we hadn’t learned enough to know what it was doing yet.  Seems that conceit and short sightedness has been a predominate feature in human thinking going way back.

The beauty of science is that truth and honesty and evidence is valued - authoritative facts win in the end.  This is because scientists belong to a community of dedicated, competitive, informed, skeptical individuals who buy into the basic premise that: We Need Each Other To Keep Ourselves Honest.  
Also they work under a set of rules, that puts honest observation at the top of the list, because constructively learning about our planet, along with her ways and means, is the goal.  A place where geophysical facts rule over personal opinion and preferences. 
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According to Neal deGrasse Tyson this is how science operates:
(1) Question authority. No idea is true just because someone says so, including me. 
(2) Think for yourself. Question yourself. Don't believe anything just because you want to. Believing something doesn't make it so. 
(3) Test ideas by the evidence gained from observation and experiment. If a favorite idea fails a well-designed test, it's wrong. Get over it. 
(4) Follow the evidence wherever it leads. If you have no evidence, reserve judgment. 
And perhaps the most important rule of all...
(5) Remember: you could be wrong. Even the best scientists have been wrong about some things. Newton, Einstein, and every other great scientist in history -- they all made mistakes. Of course they did. They were human. 
Science is a way to keep from fooling ourselves, and each other.
{Mistakes are learning opportunities !}

Tuesday, July 30, 2019

David-Attenborough communicator extraordinaire - Life on Earth, Living Planet


I have one more to add to this collect before moving on to some essays I wrote these past months.
In the 1980s my curiosity was increasing faster than my scattered understanding was adding up.  Then came David Attenborough with his two master pieces.  In 1979 Life on Earth, followed by the equally excellent The Living Planet in 1984.
Attenborough’s Life on Earth series was a godsend of sorts and I watched them repeatedly during the ‘80s and '90s with the book as a study guide as I listened to him weave together the various strands of our scientific understanding of evolution with actual living species who were "witnesses" to those ancient divergences back in deep time.
It made Evolution tangible and personal.  That was joined by The Living Planet which drove home my realization that “Mother Earth” was a pretty apt description considering our Earth’s folds within folds of cumulative harmonic complexity flowing down the cascade of time.

Attenborough conveyed his understanding with such enthusiasm and love for creation that I couldn’t help but get swept along, particularly since it so perfectly resonated with my own driving desire to grasp Evolution.

Musing on the outpouring of information in these videos I was inspired to pull out some continuous feed computer paper and graph out the 4.6 billion year old timeline - one million years equaling one millimeter.  Luckily at the time I had an unused space where I had two banquet tables lined up, since it took a couple weeks to complete in my spare time.  I filled it with PostIt notes marking key events.  Trying to get a feel for the time spans involved.
Here I’ve embedded the 2010 “First Life” videos.  Below the fold I share descriptions of Attenborough’s “Life On Earth” and “Living Planet” episodes, along with a list of his writings and some other interesting bits of information.
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David Attenborough’s First Life -- ARRIVAL -- BBC Documentary.
On YouTube courtesy of Philip D. Kreps
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David Attenborough’s First Life -- CONQUEST -- BBC Documentary.
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Monday, July 29, 2019

Ben Burger, Rocks of Utah - geology videos - What a scientist sounds like.

Benjamin Burger announcing his The Rocks of Utah Series

I’d love to be more excited about Ben Burger, he's doing YouTube geology videos for an area near and dear to me - The Colorado Basin in Utah.  But, I’m the Professor Zentner type, I’m looking for serious substance, I want to be wow’ed by the amount of facts being presented and woven together with other understanding we have.  

I dream of someone wanting to Tell The Story of the Colorado Plateau - (Ron Blakey & Wayne Ranney have already developed a powerful template, amazing things could be done with it).  But it’s a big commitment. 

It takes the sort of commitment Nick made to his beloved Washington state, along with his public speaking chops.  

I don’t know of any other examples for any other region of our country.  If there are, please do share links.

While Professor Burger has his excellent moments, there’s too much filler for my tastes.  Too many selfies, too much travelog, not enough maps or schematics or coherent scientific story being told.  I’m always left with a list of questions begging to be asked left unanswered.  

That’s just me.  At least Professor Burger deserves credit, he's stepped up to do something that’s far more difficult than it looks from the outside, and he does speak to people and he has fans, and I keep going back him - decide for yourself.

Beyond that -  I keep dreaming of some sharp, up and coming, self-possessed young professor to take the challenge by the horns and better explain the dynamic story behind how our landscape got to look the way it does.  And why it's about so much more than simply beautiful scenery.  I'd counsel starting by first watching Nick Zentner and figuring out for yourself what it is he does so well, then run with it.  

Below the fold is a linked index to Professor Burger's "Rocks of Utah" (23) along with his ongoing lectures (90+) on aspects of Vertebrate Paleontology.

Sunday, July 28, 2019

James Sadd, Earth Revealed - video geology course - What a scientist sounds like.

This one goes way back, but its a sentimental favorite and the fundamental geologic information it teaches remains pretty much as accurate today as it was the summer this came out and when, by happenstance, I was able to watch the series 3, and some episodes 4 times.  
It was a wonderful primer for starting my journey towards seriously understanding the amazing Four Corners geology.  Even now watching a few, I still think Professor Sadd presentation is first class and I still like that intro tune.
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James Sadd - Occidental College - Earth Revealed




Earth Revealed: Introductory Geology, originally titled Earth Revealed, is a 26-part video instructional series covering the processes and properties of the physical Earth, with particular attention given to the scientific theories underlying geological principles. 
The telecourse was produced by Intelecom and the Southern California Consortium, was funded by the Annenberg/CPB Project, and first aired on PBS in 1992 with the title Earth Revealed
All 26 episodes are hosted by Dr. James L. Sadd, professor of environmental science at Occidental College in Los Angeles, California.

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FREE PHYSICAL GEOLOGY VIDEO LECTURE SERIES:
Earth Revealed, by Dr. James Sadd
https://www.learner.org/resources/series78.html