TED Talks
Sebastian Wernicke: Lies, damned lies and statistics (about TEDTalks)
In a brilliantly tongue-in-cheek analysis, Sebastian Wernicke turns the tools of statistical analysis on TEDTalks, to come up with a metric for creating "the optimum TEDTalk" based on user ratings. How do you rate it? "Jaw-dropping"?...
TED Talks
David Brooks: Should you live for your résumé ... or your eulogy?
Within each of us are two selves, suggests David Brooks in this meditative short talk: the self who craves success, who builds a résumé, and the self who seeks connection, community, love -- the values that make for a great eulogy....
TED Talks
TED: A photographic journey through the Taliban's takeover of Afghanistan | Kiana Hayeri
Exposing what life looks like in Afghanistan after a 20-year US occupation and the Taliban's stunning and rapid takeover, TED Fellow and documentary photographer Kiana Hayeri captures harrowing glimpses and multifaceted realities of a...
TED Talks
Noah Feldman: Politics and religion are technologies
Noah Feldman makes a searing case that both politics and religion -- whatever their differences -- are similar technologies, designed to efficiently connect and manage any group of people.
TED Talks
TED: This decade calls for Earthshots to repair our planet | Prince William
We start this new decade knowing that it is the most consequential period in history, says Prince William, The Duke of Cambridge. Inspired by President John F. Kennedy's "Moonshot," he calls on us all to rise to our greatest challenge...
Bozeman Science
Average Value of the Electric Field
In this video Paul Andersen explains how the average value of the electric field can be determined by dividing the potential difference by the displacement. Equipotential lines can be used to determine the potential in an electric field...
TED-Ed
TED-Ed: A day in the life of an ancient Peruvian shaman
The year is 1400 BCE. At the temple of the fisherman, the morning is unusually still and this is just the latest in a series of troubling signs for Quexo, the village shaman. The villagers live off the sea, but this year the winds have...
Bozeman Science
pH and Buffers
In this video Paul Andersen explains how buffer solutions maintain pH in a solution. A buffer solution is made up of a weak acid and its conjugate base. As strong acids or bases are added the pH remains stable. A good buffer solution has...
TED-Ed
TED-Ed: The last living members of an extinct species | Jan Stejskal
In the savannahs of Kenya, two female northern white rhinos, Nájin and Fatu, munch contentedly on grass. They are the last two known northern white rhinos left on Earth. Their species is functionally extinct— without a male, they can't...
TED Talks
Jill Shargaa: Please, please, people. Let's put the 'awe' back in 'awesome'
Which of the following is awesome: your lunch or the Great Pyramid of Giza? Comedian Jill Shargaa sounds a hilarious call for us to save the word "awesome" for things that truly inspire awe.
TED Talks
TED: How I went from child refugee to international model | Halima Aden
Halima Aden made history when she became the first hijab-wearing model on the cover of Vogue magazine. Now she returns to Kenya's Kakuma Refugee Camp -- where she was born and lived until the age of seven -- to share an inspiring message...
MinutePhysics
Why is Relativity Hard? | Special Relativity Chapter 1
Thanks to my friend Mark Rober for making the spacetime globe, and to Grant Sanderson (3blue1brown) for inspiration. This is the first in a series of videos about special relativity. This is definitely not an academic course, but it's...
Crash Course
Personal Identity: Crash Course Philosophy
Today Hank is building on last week’s exploration of identity to focus on personal identity. Does it in reside in your body? Is it in the collective memories of your consciousness? There are, of course, strengths and weaknesses to both...
TED Talks
TED: 3 questions to build resilience -- and change the world | Sister True Dedication
Every moment of movement is a chance to become more aware of yourself and the world around you, says Zen Buddhist nun Sister True Dedication. Guiding us through the art of "mindful walking," she shares three essential questions to ask...
TED Talks
Christina Warinner: Tracking ancient diseases using ... plaque
Imagine what we could learn about diseases by studying the history of human disease, from ancient hominids to the present. But how? TED Fellow Christina Warinner is an achaeological geneticist, and she's found a spectacular new tool --...
TED Talks
TED: Why it's too hard to start a business in Africa -- and how to change it | Magatte Wade
Many African countries are poor for a simple reason, says entrepreneur Magatte Wade: governments have created far too many obstacles to starting and running a business. In this passionate talk, Wade breaks down the challenges of doing...
TED Talks
TED: The radical, revolutionary resilience of Black joy | Miracle Jones
In the face of trauma, happiness is resilience: a revolutionary act of thriving despite all odds, rather than wilting or surrendering. Community organizer and activist Miracle Jones offers a heart-to-heart meditation on the role of joy...
Bozeman Science
Protists
Paul Andersen surveys organisms in the protists. He reviews the diversity found within the domain Eukarya and explains that the Kindgom Protista is simple a junk drawer for organisms that don't fit elsewhere.
TED Talks
TED: The journey across the high wire | Philippe Petit
Even a death-defying magician has to start somewhere. High-wire artist Philippe Petit takes you on an intimate journey from his first card trick at age 6 to his tightrope walk between the Twin Towers.
Bozeman Science
Wave Period and Frequency
In this video Paul Andersen explains how the period is the time between wave and the frequency is the number of waves per second. Period is measured in seconds and frequency is measured in Hertz. Wave period and wave frequency are...
SciShow
The Hunt for the First Neutrinos in the Universe - Cosmic Neutrino Background
The Cosmic Microwave Background shows us the oldest light in the universe, but to really understand the early universe we need something even older: The Cosmic Neutrino Background.
Bozeman Science
Strong Nuclear Force
In this video Paul Andersen explains how the strong nuclear force holds the nucleus together in spite of repulsive electrostatic charges acting on the nucleons. Mesons exchanged between nucleons keep the nucleus intact and gluons...
SciShow
What Happens When You Stop Eating?
You know what starvation is, but do you know what it does to you? Hank walks you through the three major metabolic phases of starvation, from burning sugars to, basically, self-cannibalism.
Bozeman Science
Wave Superposition
In this video Paul Andersen explains how waves interact when moving through one another. Unlike particles waves can interfere both constructively and destructively. The amount of interference is determined through the superposition...