Remembering Darwin’s death, April 19, 1882, and his legacy in 2016

April 19, 2016

This is an encore post.

We shouldn’t pass April 19 — a day marked by significant historic events through the past couple hundred years — without remembering that it is also the anniversary of the death of Darwin.

Charles Darwin in 1881, by John Collier

Charles Darwin in 1881, portrait by John Collier; after a Collier painting hanging in the Royal Society

Immortality?  Regardless Darwin’s religious beliefs (I’ll argue he remained Christian, thank you, if you wish to argue), he achieved immortality solely on the strength of his brilliant work in science. Of course he’s best known for being the first to figure out that natural and sexual selection worked as tools to sculpt species over time, a theory whose announcement he shared with Alfred Russel Wallace, who independently arrived at almost exactly the same theory but without the deep evidentiary backup Darwin had amassed.

But had evolution turned out to be a bum theory, Darwin’s other works would have qualified him as one of the greatest scientists of all time, including:

Darwin's theory set out a sequence of coral re...

Darwin’s theory set out a sequence of coral reef formation around an extinct volcanic island, becoming an atoll as the island and ocean floor subsided. Courtesy of the U.S. Geological Survey (Photo credit: Wikipedia)

US Geological Survey graphic demonstrating how coral atolls form on the sinking remains of old volcanic sea mounts, as Darwin described. Wikimedia commons image

  • World’s greatest collector of biological samples:  During his five years’ voyage on HMS Beagle, Darwin collected the largest collection of diverse plant and animal life ever by one person (I believe the record still stands); solely on the strength of his providing actual examples to the British Museum of so much life in so many different ecosystems worldwide, before he was 30 Darwin won election to the Royal Society.  (His election was engineered partly by friends who wanted to make sure he stayed in science, and didn’t follow through on his earlier plan to become a preacher.)
  • Geology puzzle solver:  Coral atolls remained a great geological mystery.  Sampling showed coral foundations well below 50 feet deep, a usual limit for coral growth.  In some cased old, dead coral were hundreds of feet deep.  In the South Pacific, Darwin looked at a number of coral atolls, marvelous “islands” that form almost perfectly circular lagoons.  Inspired partly by Lyell’s new encyclopedic review of  world geology, Darwin realized that the atolls he saw were the peaks of volcanic mounts.  Darwin hypothesized that the volcanoes grew from the ocean floor to the surface, and then the islands were colonized by corals.  The round shape of the volcano gave the atoll its shape.  Then the volcanic mounts eroded back, or sank down, and corals continued to grow on the old foundations.  It was a perfectly workable, natural explanation for a long-standing geologic puzzle.  (See Darwin’s monograph, Structure and Distribution of Coral Reefs.)
  • Patient watcher of flowers:  Another great mystery, this time in biology, concerned how vines twined themselves onto other plants, rocks and structures.  Darwin’s genius in designing experiments shone here:  He put a vine in his study, and watched it.  Over several hours, he observed vine tendrils flailing around, until they latched on to something, and then the circular flailing motion wrapped the tendril around a stick or twig. Simple observation, but no one had ever attempted it before.  (See On the Movements and Habits of Climbing Plants.)
  • Champion of earthworms, and leaf mould:  Darwin suspected the high fertilizer value of “leaf mould” might be related to the action of earthworms.  Again, through well-designed experiments and simple observation, Darwin demonstrated that worms moved and aerated soil, and converted organic matter into even richer fertilizer. (See The Formation of Vegetable Moulds Through the Action of Worms.)
  • Creation of methodological science:  In all of this work, Darwin explained his processes for designing experiments, and controls, and made almost as many notes on how to observe things, as the observations themselves.  Probably more than any other single man, Darwin invented and demonstrated the use of a series of processes we now call “the scientific method.”  He invented modern science.

Any of those accomplishments would have been a career-capping work for a scientist.  Darwin’s mountains of work still form foundations of geology and biology, and are touchstones for genetics.

Born within a few hours of Abraham Lincoln on February 12, 1809, Darwin survived 17 years longer — 17 extremely productive years.  Ill through much of his life with mystery ailments, perhaps Chaga’s Disease, or perhaps some other odd parasite or virus he picked up on his world travels, Darwin succumbed to heart disease on April 19, 1882.

More:

 


Are birds smarter than Columbus?

March 8, 2016

Another great find on Twitter, for geography, biology and physics classes.

How do birds navigate, compared to, say, Columbus? Most U.S. history texts make a big deal of Columbus’s navigation, made possible by invention of the magnetic compass and the sextant.

Birds are more accurate, and they have neither. Well, they don’t have external magnetic compasses. See the cartoon.

Neuroscientist and cartoonist team up to talk about birds

Neuroscientist and cartoonist team up to talk about birds “seeing” magnetic lines of the Earth! Information from Dwayne Godwin at Wake Forest University School of Medicine, with drawings by Jorge Cham, who draws Piled Higher and Deeper.

Teachers, have someone in the drafting department make this cartoon into a poster for your classroom.

As usual, the truth is more weird and wonderful than fiction writers could hope to invent.

Tip of the old scrub brush to Columbia University’s Twitter managers.


Beauty in nature: Stingray x-ray

December 13, 2015

A stunning photograph, with much to think about.  It wandered around the internet a couple of years ago, and it’s good enough, it’s going around again.

It’s an x-ray of a stingray. Consider what Charles Darwin might have thought about such an image. It’s a species discovered only in the last decade, imaged by a means of photography not known to be possible until more than a decade after Darwin’s death. What would he make of the discovery of a species, and the ability to see inside the thing, showing the cartilaginous skeleton (compare with the rays’ cousins, the sharks), and showing the organs Darwin knew would be there if evolution was, in fact, accurate.

21st century science brings such beauty:

x-ray-of-a-stingray

Caption from TwistedSifter: “The photograph above is an x-ray of a freshwater stingray species discovered in 2011 in the Amazon rain forest. The discovery was made by the research team of Nathan Lovejoy, a biologist at the University of Toronto in Scarborough; and Marcelo Rodrigues de Carvalho of the University of Sao Paolo in Brazil. The new species is known as Heliotrygon gomesi. Besides the pancake-like appearance, the ray is big, with slits on its belly and a tiny spine on its tail.” Photo by Ken Jones.

More:


Losing the fight for biodiversity: An infographic

April 28, 2014

BusinessWorld infographic

BusinessWorld infographic

From BusinessWorld, a publication in India:

Even as India bats for biodiversity investments at a UN convention of experts from 193 countries, the planet is staring at an imminent crisis that could wipe out life as we know it.

Compiled by Yashodhara Dasgupta

Click Here To Download Infographic

Sources: International Union for Conservation of Nature,
World Wide Fund for Nature, Ministry of Environment and Forests

Graphic: Sajeev Kumarapuram

(This story was published in Businessworld Issue Dated 22-10-2012)
– See more at: http://www.businessworld.in/news/business/environment/the-losing-world/570570/page-1.html#sthash.mmSk4DDw.dpuf

This would be a good poster for geography, biology, general science and world history courses. Can your drafting class print this out for you in poster format?

When all of the “coal mine canaries” on Earth die out, how much longer have humans left to live on Earth?

What hope have we, with yahoos like this leading us in Congress?

ven as India bats for biodiversity investments at a UN convention of experts from 193 countries, the planet is staring at an imminent crisis that could wipe out life as we know it.Compiled by Yashodhara Dasgupta – See more at: http://www.businessworld.in/news/business/environment/the-losing-world/570570/page-1.html#sthash.mmSk4DDw.dpuf

ven as India bats for biodiversity investments at a UN convention of experts from 193 countries, the planet is staring at an imminent crisis that could wipe out life as we know it.Compiled by Yashodhara Dasgupta

Click Here To Download Infographic

 

Sources: International Union for Conservation of Nature,

World Wide Fund for Nature, Ministry of Environment and ForestsGraphic: Sajeev Kumarapuram

(This story was published in Businessworld Issue Dated 22-10-2012)

– See more at: http://www.businessworld.in/news/business/environment/the-losing-world/570570/page-1.html#sthash.mmSk4DDw.dpuf

ven as India bats for biodiversity investments at a UN convention of experts from 193 countries, the planet is staring at an imminent crisis that could wipe out life as we know it.Compiled by Yashodhara Dasgupta

Click Here To Download Infographic

 

Sources: International Union for Conservation of Nature,

World Wide Fund for Nature, Ministry of Environment and ForestsGraphic: Sajeev Kumarapuram

(This story was published in Businessworld Issue Dated 22-10-2012)

– See more at: http://www.businessworld.in/news/business/environment/the-losing-world/570570/page-1.html#sthash.mmSk4DDw.dpuf


Darwin’s death, April 19, 1882, and his legacy today

April 19, 2014

This is an encore post.

We shouldn’t pass April 19 — a day marked by significant historic events through the past couple hundred years — without remembering that it is also the anniversary of the death of Darwin.

Charles Darwin in 1881, by John Collier

Charles Darwin in 1881, portrait by John Collier; after a Collier painting hanging in the Royal Society

Immortality?  Regardless Darwin’s religious beliefs (I’ll argue he remained Christian, thank you, if you wish to argue), he achieved immortality solely on the strength of his brilliant work in science. Of course he’s best known for being the first to figure out that natural and sexual selection worked as tools to sculpt species over time, a theory whose announcement he shared with Alfred Russel Wallace, who independently arrived at almost exactly the same theory but without the deep evidentiary backup Darwin had amassed.

But had evolution turned out to be a bum theory, Darwin’s other works would have qualified him as one of the greatest scientists of all time, including:

Darwin's theory set out a sequence of coral re...

Darwin’s theory set out a sequence of coral reef formation around an extinct volcanic island, becoming an atoll as the island and ocean floor subsided. Courtesy of the U.S. Geological Survey (Photo credit: Wikipedia)

US Geological Survey graphic demonstrating how coral atolls form on the sinking remains of old volcanic sea mounts, as Darwin described. Wikimedia commons image

  • World’s greatest collector of biological samples:  During his five years’ voyage on HMS Beagle, Darwin collected the largest collection of diverse plant and animal life ever by one person (I believe the record still stands); solely on the strength of his providing actual examples to the British Museum of so much life in so many different ecosystems worldwide, before he was 30 Darwin won election to the Royal Society.  (His election was engineered partly by friends who wanted to make sure he stayed in science, and didn’t follow through on his earlier plan to become a preacher.)
  • Geology puzzle solver:  Coral atolls remained a great geological mystery.  Sampling showed coral foundations well below 50 feet deep, a usual limit for coral growth.  In some cased old, dead coral were hundreds of feet deep.  In the South Pacific, Darwin looked at a number of coral atolls, marvelous “islands” that form almost perfectly circular lagoons.  Inspired partly by Lyell’s new encyclopedic review of  world geology, Darwin realized that the atolls he saw were the peaks of volcanic mounts.  Darwin hypothesized that the volcanoes grew from the ocean floor to the surface, and then the islands were colonized by corals.  The round shape of the volcano gave the atoll its shape.  Then the volcanic mounts eroded back, or sank down, and corals continued to grow on the old foundations.  It was a perfectly workable, natural explanation for a long-standing geologic puzzle.  (See Darwin’s monograph, Structure and Distribution of Coral Reefs.)
  • Patient watcher of flowers:  Another great mystery, this time in biology, concerned how vines twined themselves onto other plants, rocks and structures.  Darwin’s genius in designing experiments shone here:  He put a vine in his study, and watched it.  Over several hours, he observed vine tendrils flailing around, until they latched on to something, and then the circular flailing motion wrapped the tendril around a stick or twig. Simple observation, but no one had ever attempted it before.  (See On the Movements and Habits of Climbing Plants.)
  • Champion of earthworms, and leaf mould:  Darwin suspected the high fertilizer value of “leaf mould” might be related to the action of earthworms.  Again, through well-designed experiments and simple observation, Darwin demonstrated that worms moved and aerated soil, and converted organic matter into even richer fertilizer. (See The Formation of Vegetable Moulds Through the Action of Worms.)
  • Creation of methodological science:  In all of this work, Darwin explained his processes for designing experiments, and controls, and made almost as many notes on how to observe things, as the observations themselves.  Probably more than any other single man, Darwin invented and demonstrated the use of a series of processes we now call “the scientific method.”  He invented modern science.

Any of those accomplishments would have been a career-capping work for a scientist.  Darwin’s mountains of work still form foundations of geology and biology, and are touchstones for genetics.

Born within a few hours of Abraham Lincoln on February 12, 1809, Darwin survived 17 years longer — 17 extremely productive years.  Ill through much of his life with mystery ailments, perhaps Chaga’s Disease, or perhaps some other odd parasite or virus he picked up on his world travels, Darwin succumbed to heart disease on April 19, 1882.

More:

 


Darwin’s death, April 19, 1882

April 20, 2013

We shouldn’t get out of April 19 — a day marked by significant historic events through the past couple hundred years — without remembering that it is also the anniversary of the death of Darwin.

Charles Darwin in 1881, by John Collier

Charles Darwin in 1881, portrait by John Collier; after a Collier painting hanging in the Royal Society

Immortality?  Regardless Darwin’s religious beliefs (I’ll argue he remained Christian, thank you, if you wish to argue), he achieved immortality solely on the strength of his brilliant work in science. Of course he’s best known for being the first to figure out that natural and sexual selection worked as tools to sculpt species over time, a theory whose announcement he shared with Alfred Russel Wallace, who independently arrived at almost exactly the same theory but without the deep evidentiary backup Darwin had amassed.

But had evolution turned out to be a bum theory, Darwin’s other works would have qualified him as one of the greatest scientists of all time, including:

Darwin's theory set out a sequence of coral re...

Darwin’s theory set out a sequence of coral reef formation around an extinct volcanic island, becoming an atoll as the island and ocean floor subsided. Courtesy of the U.S. Geological Survey (Photo credit: Wikipedia)

US Geological Survey graphic demonstrating how coral atolls form on the sinking remains of old volcanic sea mounts, as Darwin described. Wikimedia commons image

  • World’s greatest collector of biological samples:  During his five years’ voyage on HMS Beagle, Darwin collected the largest collection of diverse plant and animal life ever by one person (I believe the record still stands); solely on the strength of his providing actual examples to the British Museum of so much life in so many different ecosystems worldwide, before he was 30 Darwin won election to the Royal Society.  (His election was engineered partly by friends who wanted to make sure he stayed in science, and didn’t follow through on his earlier plan to become a preacher.)
  • Geology puzzle solver:  Coral atolls remained a great geological mystery.  Sampling showed coral foundations well below 50 feet deep, a usual limit for coral growth.  In some cased old, dead coral were hundreds of feet deep.  In the South Pacific, Darwin looked at a number of coral atolls, marvelous “islands” that form almost perfectly circular lagoons.  Inspired partly by Lyell’s new encyclopedic review of  world geology, Darwin realized that the atolls he saw were the peaks of volcanic mounts.  Darwin hypothesized that the volcanoes grew from the ocean floor to the surface, and then the islands were colonized by corals.  The round shape of the volcano gave the atoll its shape.  Then the volcanic mounts eroded back, or sank down, and corals continued to grow on the old foundations.  It was a perfectly workable, natural explanation for a long-standing geologic puzzle.  (See Darwin’s monograph, Structure and Distribution of Coral Reefs.)
  • Patient watcher of flowers:  Another great mystery, this time in biology, concerned how vines twined themselves onto other plants, rocks and structures.  Darwin’s genius in designing experiments shone here:  He put a vine in his study, and watched it.  Over several hours, he observed vine tendrils flailing around, until they latched on to something, and then the circular flailing motion wrapped the tendril around a stick or twig. Simple observation, but no one had ever attempted it before.  (See On the Movements and Habits of Climbing Plants.)
  • Champion of earthworms, and leaf mould:  Darwin suspected the high fertilizer value of “leaf mould” might be related to the action of earthworms.  Again, through well-designed experiments and simple observation, Darwin demonstrated that worms moved and aerated soil, and converted organic matter into even richer fertilizer. (See The Formation of Vegetable Moulds Through the Action of Worms.)
  • Creation of methodological science:  In all of this work, Darwin explained his processes for designing experiments, and controls, and made almost as many notes on how to observe things, as the observations themselves.  Probably more than any other single man, Darwin invented and demonstrated the use of a series of processes we now call “the scientific method.”  He invented modern science.

Any of those accomplishments would have been a career-capping work for a scientist.  Darwin’s mountains of work still form foundations of geology and biology, and are touchstones for genetics.

Born within a few hours of Abraham Lincoln on February 12, 1809, Darwin survived 17 years longer — 17 extremely productive years.  Ill through much of his life with mystery ailments, perhaps Chaga’s Disease, or perhaps some other odd parasite or virus he picked up on his world travels, Darwin succumbed to heart disease on April 19, 1882.

More:

 


Rachel Carson’s Silent Spring at 50: Catalog of tributes

December 11, 2012

Over the year so many tributes, commentaries, and wild-hare critiques keep pushing Rachel Carson‘s Silent Spring back into our memories, and relevance.  Too many to list and comment on, but I’ll make a list of those I found most informative or useful, and of a couple I found most repugnant.

I’ll update this list from time to time.  I’m using this as a file for my writing as well, but some of this stuff needs to be shared more broadly — and of course, I appreciate corrections and pointers to other good sources.

English: An image of the main entrance of Rach...

Main entrance of Rachel Carson Middle School, Falls Church Public Schools, Herndon, Virginia. (Photo credit: Wikipedia)

A collection:

Good stuff on Carson and Silent Spring:

Informative:

People who don’t get it, are blinded by bias, or never had their mouths washed out with soap:

General news:

More, not categorized:


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