Crash Course
The Modern Revolution: Crash Course Big History
In which Hank and John Green teach you a Crash Course on the modern revolution, and the upside of the progress that humanity has made in the last 500 years or so. And while there are two sides to every history, and many of these changes...
3Blue1Brown
Derivatives of exponentials | Chapter 5, Essence of calculus
What is the derivative of a^x? Why is e^x its own derivative? This video shows how to think about the rule for differentiating exponential functions.
TED-Ed
TED-Ed: Five fingers of evolution - Paul Andersen
How can a "thumbs up" sign help us remember five processes that impact evolution? The story of the Five Fingers of Evolution gives us a clever way of understanding change in gene pools over time.
Bozeman Science
AP Biology Practice 2 - Using Mathematics Appropriately
Paul Andersen explains how to use mathematics appropriately. He begins by emphasizing the important role that mathematics plays in the life sciences today and in that the future. He describes important mathematical equations in each of...
PBS
Martian Evolution
What will become of humanity after spend a few hundred years on Mars? What will happen after a few thousand? Evolution has, and still is, shaping humanity in rather drastic ways. How long will humans stop being human and become Martian?
TED-Ed
TED-Ed: Why are some people left-handed? - Daniel M. Abrams
Today, about one-tenth of the world's population are southpaws. Why are such a small proportion of people left-handed -- and why does the trait exist in the first place? Daniel M. Abrams investigates how the uneven ratio of lefties and...
SciShow
3 New Facts About Denisovans
Hank brings us some late-breaking news from the genus Homo - a team of scientists has sequenced the genome of the Denisova hominin, the latest member to be added to the human family tree.
SciShow
What Your Family History Can’t Tell You
The first time you visit a new doctor, they’ll probably ask you about your family history - but it turns out that family history doesn’t tell you everything about the risks that can be hidden in your genes.
TED-Ed
TED-ED: The past, present and future of the bubonic plague - Sharon N. DeWitte
The bubonic plague, which killed around 1/5 of the world's population in the 14th century, is still around today -- but it now claims only a few thousand lives each year. How did that number shrink so drastically? Sharon N. DeWitte...
TED-Ed
TED-ED: Feedback loops: How nature gets its rhythms - Anje-Margriet Neutel
While feedback loops are a bummer at band practice, they are essential in nature. What does nature's feedback look like, and how does it build the resilience of our world? Anje-Margriet Neutel describes some common positive and negative...
TED Talks
TED: The next generation of African architects and designers | Christian Benimana
Christian Benimana wants to build a network of architects who can help Africa's booming cities flourish in sustainable, equitable ways -- balancing growth with values that are uniquely African. From Nigeria to Burkina Faso and beyond, he...
TED-Ed
These salamanders snack on each other (but don't die) | Luis Zambrano
Axolotls are one of science's most studied animals. Why, you ask? These extraordinary salamanders are masters of regeneration: they can flawlessly regenerate body parts ranging from amputated limbs and crushed spines to parts of their...
TED Talks
TED: The biggest risks facing cities -- and some solutions | Robert Muggah
With fantastic new maps that show interactive, visual representations of urban fragility, Robert Muggah articulates an ancient but resurging idea: cities shouldn't just be the center of economics -- they should also be the foundation of...
TED Talks
TED: Where on Earth will people live in the future? | Parag Khanna
From the return of nomadic living to a climate-disrupted world, author and global strategist Parag Khanna has some predictions for humanity. Get a fascinating glimpse at the future as he tackles an urgent question: Where on Earth will...
TED Talks
TED: Why medicine often has dangerous side effects for women | Alyson McGregor
You might not know this: Many of the medicines we take -- common drugs like Ambien and everyday aspirin -- were only ever tested on men. And the unknown side effects for women can be dangerous, even deadly. Alyson McGregor studies the...
SciShow
When Organisms Invade | Compilation
Invasive species are more than just unwelcome guests, and while some can be super harmful, others might actually be helpful!
TED Talks
TED: The link between inequality and anxiety | Richard Wilkinson
Why are global levels of anxiety and depression so high? Social epidemiologist Richard Wilkinson presents compelling data on the impact of inequality on mental health and social relationships in countries around the world. "Inequality,"...
TED Talks
TED: What we can do to die well | Timothy Ihrig
The healthcare industry in America is so focused on pathology, surgery and pharmacology -- on what doctors "do" to patients -- that it often overlooks the values of the human beings it's supposed to care for. Palliative care physician...
SciShow
Finally, A Male Pill?
Hank briefs us on the news that a team of biologists has developed the first contraceptive for males that is totally effective, easily reversible and doesn't mess with your hormones!
TED-Ed
TED-Ed: Why do humans have a third eyelid? | Dorsa Amir
You know that little pink thing nestled in the corner of your eye? It's actually the remnant of a third eyelid. In humans, it's vestigial, meaning it no longer serves its original purpose. There are several other vestigial structures in...
TED Talks
TED: A global food crisis may be less than a decade away | Sara Menker
Sara Menker quit a career in commodities trading to figure out how the global value chain of agriculture works. Her discoveries have led to some startling predictions: "We could have a tipping point in global food and agriculture if...
Be Smart
Why Are Cicadas So Good At Math?
Do periodical cicadas "know" how to calculate prime numbers? One of the strangest life cycles in all of biology, explained!
SciShow
Lemurs Are Into Networking Too
New research says that even lemurs benefit from networking skills and some frogs are finally bouncing back from the Chytrid epidemic.
TED Talks
TED: Why curiosity is the key to science and medicine | Kevin B. Jones
Science is a learning process that involves experimentation, failure and revision -- and the science of medicine is no exception. Cancer researcher Kevin B. Jones faces the deep unknowns about surgery and medical care with a simple...