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No salesman will call, at least not from us. Maybe from someone else.
One of the Ballona Salt Marsh channels (Leslie Davidson ’07)
The Los Angeles Audubon Society is seeking volunteers to help us connect local school children with nature. Our high quality environmental education programs help to raise awareness among elementary and middle school students about the wonderful natural habitats found within our own city limits, at the Ballona Wetlands and at Kenneth Hahn State Recreation Area. Over 3,000 budding naturalists participated in our field trips during the 2016-2017 school year.
Training for the Ballona Wetlands program commences on Thursday, September 13th and continues on the five following Thursdays until October 18th. Each training session run from 9 am to noon.
Training for the Kenneth Hahn State Recreation Area on Friday, September 21stand continues on the five following Fridays until October 26th. Each training session run from 9 am to noon.
No experience is necessary; just a love of the outdoors and a willingness to work with children. For more information please contact Cindy Hardin at cindyhardin@laaudubon.org or at 310-301-0050.
Thanks so much.
Cindy Hardin
We complete the final episode of the PBS explanation of evolution.
In my opinion, if you think deeply upon the wide-ranging implications of the quotation from Theodosius Dobzhansky, presented at the very beginning of the first episode, it will give you greater insight into the workings of biology, including everything humans have ever done, do now, and ever will do, than anything else you might ever read or learn.
“Nothing in Biology Makes Sense Except in the Light of Evolution”
— Theodosius Dobzhansky, 1973
This is an installment of the PBS – It’s OK to be Smart series. If no film or link appears in this email, go to the blog to view it by clicking on the blog title above. If the film stops & starts in an annoying manner, press pause (lower left double bars ||) to let it buffer and get ahead of you.
Watch all 18 minutes of this 12-part series at once and avoid the Dropbox ads here.
[Chuck Almdale]
Genetic Testing Goes Mainstream
My apologies to you is this topic is distressingly off-bird-topic. We do run blogs of a general science nature – those videos we post every 4-5 days, for example – and this topic fits well within that category. But most of our readers have read about genetic testing; many have sent in their DNA for testing, or are thinking about it but want to know more before they plunk down $80-$1000. This is for you as a public service.
You are likely already well aware of the enormous effects of recent advances in DNA analysis on all biological fields. The familial relationships of bird orders, families, genera and species are reshuffled yearly; new field guides are out-of-date before they’re printed. All people with European ancestry have neanderthals in their family tree. Disorders are daily discovered to have genetic mutations as their cause. Stem cells, designer DNA, evolution, insurance discrimination, eugenics – the list goes on.
In 2017, more than seven million people, mostly in the United States, sent their DNA to testing companies. Are you one of them? Are you one of the many millions more thinking about it?
In any case, you should read this series of reports from Science News, to which we provide links. Science News, in publication for over 100 years, is a widely-read and respected bimonthly devoted entirely to science. [Chuck Almdale]
Special Report: Genetic Testing Goes Mainstream
This links to the entire collection of reports.
For an individual report, links are provided farther below.
Consumers are jumping on the genetic testing bandwagon. Many don’t know what’s in store. What you can expect to learn from consumer genetic testing. Review of experiences with companies offering health-focused and ancestry-based readouts. A close look at genetic privacy policies. The usefulness of prenatal genome testing. The risks of direct-to-consumer telomere testing. A video explanation of DNA recombination shows how heredity works.
The following chart doesn’t appear in the on-line articles, but was included in the magazine version of Comparative Review (final item below). If the chart is garbled in your email, read it on the blog. Additional testing services Veritas and Genos, not included below, are discussed in The Comparison of Results article (see link below).
| National Geographic Geno 2.0 | Living DNA | Family Tree DNA | 23andMe | Ancestry DNA | |
| Cost | $200 | $159 | $79** | $99 | $99 |
| Ethnicity Estimates | Yes | Yes | Yes | Yes | Yes |
| Relative Matching | Coming Soon | Yes | Yes | Yes | |
| Neanderthal Results | Yes | Yes | |||
| Analysis of Y Chromosome | Yes | Yes | Yes | Yes | |
| Mitochondrial DNA Analysis | Yes | Yes | Yes | Yes | |
| Family Tree Building | Yes | Yes | |||
| Pros | Specialized for looking into the deep past | Offers detailed ethnicity estimates for people of British or Irish descent | Incorpor-ates DNA results into family trees | Explains results well | Allows DNA results to be combined with traditional genealog-ical records |
| Cons | Provides no ancestry information within the last 500 years | Can’t link relatives to a family tree | Doesn’t explain results well; website is hard to navigate | Can’t link relatives to a family tree | Provides no information about ancient ancestry |
| ** Y chromosome and mitochondrial DNA analysis costs extra | |||||
What is DNA recombination? – YouTube Video | Science News
DNA recombination can be a confusing concept, especially in how it can influence consumer genetic test results. If you’re wondering why you and your sibling seem to have very different ancestors, this explanation, using lego blocks, makes it all clear.
Consumer DNA testing promises more than it delivers.
Here’s what to expect from consumer DNA tests.
Writer: Tina Hesman Saey
Published by Science News 5/26/18
The Comparison of Results
What genetic tests from 23andMe, Veritas and Genos really told me about my health. What you need to know before signing up for at-home DNA testing.
Writer: Tina Hesman Saey
Published by Science News 5/26/18
Privacy and Consumer Genetic Testing Don’t Always Mix
Protections are spotty at best and vary by testing company.
Writer: Cassie Martin
Published online by Science News 6/5/18
Why Using Genetic Genealogy to Solve Crimes Could Pose Problems
Some worry that authorities could violate people’s rights using the method.
Writer: Tina Hesman Saey
Published online by Science News 6/7/18
Risks and Riddles
What consumer DNA data can and can’t tell you about your risk for certain diseases. Consumers face lots of choices and unanswered questions.
Writer: Tina Hesman Saey
Published by Science News 6/9/18
A Peek into the Womb
Guidelines call for limits to whole genome testing for fetuses.
Writer: Laura Sanders
Published by Science News 6/9/18
Finding Family
DNA testing can bring families together, but gives mixed answers on ethnicity. Ethnicity estimates vary widely depending on which company is doing the testing. DNA testing helped one man find his biological family in southern Maryland and his Irish roots.
Writer: Tina Hesman Saey
Published by Science News 6/23/18
Telomeres
At-home telomere (the “cap” at each end of each chromosome) testing is not a reliable marker of aging, researcher says. Companies pledge to tell you your cellular age from a drop of blood. Don’t be so sure.
Writer: Cory Vanchieri
Published by Science News 6/23/18
Comparative review of 5 DNA testing companies
What author Saey actually learned about her family after trying 5 DNA ancestry tests. Results can vary widely depending on which company you use.
Writer: Tina Hesman Saey
Published by Science News 6/23/18
Iridescent feathers appear black or dull one moment, then flash into glittering color as light hits them at just the right angle. The colors are produced as the feather’s microscopic structure reflects some colors while eliminating others. The Ribbon-tailed Astrapia presents an outstanding example of how iridescence can transform the look of a bird almost instantly. Filmed and photographed by Tim Laman.
There are currently seventy-two short films in the entire Birds-of-Paradise Project playlist, ranging from 26 seconds to 8:29. In the upcoming weeks, we will present some of our favorites.
A film from the Cornell Lab of Ornithology. If no film or link appears in this email, go to the blog to view it by clicking on the blog title above. If the film stops & starts in an annoying manner, press pause (lower left double bars ||) to let it buffer and get ahead of you. [Chuck Almdale]
We continue the PBS explanation of evolution in twelve short episodes, suitable for all.
This is an installment of the PBS – It’s OK to be Smart series. If no film or link appears in this email, go to the blog to view it by clicking on the blog title above. If the film stops & starts in an annoying manner, press pause (lower left double bars ||) to let it buffer and get ahead of you.
Watch all 18 minutes of this 12-part series at once and avoid the Dropbox ads here.
[Chuck Almdale]
SANTA MONICA BAY AUDUBON SOCIETY BLOG 