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"Forty-one million IQ points. That’s what Dr. David Bellinger determined Americans have collectively forfeited as a result of exposure to lead, mercury, and organophosphate pesticides. In a 2012 paper published by the National Institutes of Health, Bellinger, a professor of neurology at Harvard Medical School, compared intelligence quotients among children whose mothers had been exposed to these neurotoxins while pregnant to those who had not. Bellinger calculates a total loss of 16.9 million IQ points due to exposure to organophosphates, the most common pesticides used in agriculture.”

This “silent pandemic” of toxins is believed to be “causing not just lower IQs, but ADHD and autism spectrum disorder.”

The Toxins That Threaten Our Brains | The Atlantic

(via freshphotons)


Scalar Field

Paul Andersen explains how scalar fields can be used to show the distribution of scalar quantities. The most important scalar fields in AP Physics 2 deal with electric potential. Scalar addition can be used to combine scalar fields.

via Bozeman Science.


The Secret Mathematicians

Professor Marcus du Sautoy examines the way that Mathematics has overtly and covertly inspired some of the greatest artists. He examines how they might be considered as secret mathematicians.

From composers to painters, writers to choreographers, the mathematician’s palette of shapes, patterns and numbers has proved a powerful inspiration. Artists can be subconsciously drawn to the same structures that fascinate mathematicians as they hunt for interesting new structures to frame their creative process.

Professor du Sautoy will explore the hidden mathematical ideas that underpin the creative output of well-known artists and reveal that the work of the mathematician is also driven by strong aesthetic values.

The transcript and downloadable versions of the lecture are available from the Gresham College Website:

Duration: 53:54

via Gresham College.


Wave-Particle Duality - Part 1

Paul Andersen explains the wave-particle duality discovered by scientists. In certain situations particles (like electrons and photons) display wave like properties. This phenomenon can best be explored using the double slit experiment. Small particles follow the rules of quantum mechanics creating results that are not very intuitive.

via Bozeman Science.


How to Persuade Others with the Right Questions: Jedi Mind Tricks from Daniel H. Pink

Sales guru and persuasion expert Daniel H. Pink explains how you can use motivational interviewing to influence others’ thoughts and behaviors. Pink’s latest book is To Sell Is Human: The Surprising Truth About Motivating Others (

via Big Think.


Is the Universe Entirely Mathematical? Feat. Max Tegmark

Thanks to Max Tegmark for writing & narrating this video, you can listen to his new book at OR find it on Amazon

Thanks to Radiolab for letting me visit them in New York for a month; this video was made in their office!

Minute Physics provides an energetic and entertaining view of old and new problems in physics — all in a minute!

Music by Nathaniel Schroeder

via Minute Physics.
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