0! Zero Factorial
Regarding the equation at the end – James says it should be e^-t dt NOT e^-n dn … sorry for the mix-up!
Lectures
Your body language shapes who you are
Body language affects how others see us, but it may also change how we see ourselves. Social psychologist Amy Cuddy shows how “power posing” — standing in a posture of confidence, even when we don’t feel confident — can affect testosterone and cortisol levels in the brain, and might even have an impact on our chances for success.
Is Math a feature of the Universe or a feature of Human Creation?
Math is invisible. Unlike physics, chemistry, and biology we can’t see it, smell it, or even directly observe it in the universe. And so that has made a lot of really smart people ask, does it actually even EXIST?!?
Lagrange Points
Discussing Lagrangian (Lagrange) points, orbits and gravity.
Liquid Oxygen in slow motion
Dropping hot charcoal into liquid oxygen – filmed with a high-speed camera.
How to turn Sound into Light: Sonoluminescence
Sonoluminescence is the emission of short bursts of light from imploding bubbles in a liquid when excited by sound.
The importance of building strong relationships
In the age of social media we might have large networks but few if any real relationships.
How behavioral science can lower your energy bill
What’s a proven way to lower your energy costs? Would you believe: learning what your neighbor pays. Alex Laskey shows how a quirk of human behavior can make us all better, wiser energy users, with lower bills to prove it.
Could we speak the language of dolphins?
For 28 years, Denise Herzing has spent five months each summer living with a pod of Atlantic spotted dolphins, following three generations of family relationships and behaviors. It’s clear they are communicating with one another — but is it language? Could humans use it too? She shares a fascinating new experiment to test this idea.
Ethical riddles in HIV research
It’s an all too common story: after participating in an HIV clinical trial, a woman in sub-Saharan Africa is left without the resources to buy a bus ticket to her health clinic, let alone to afford life-saving antiretrovirals. Boghuma Kabisen Titanji asks an important question: how can researchers looking for a cure make sure they’re not taking advantage of those most affected by the pandemic?
Optimism is not insane
In which Hank talks about our cognitive bias toward bad news, how that affects us, and why there are, in fact, lots of reasons to be optimistic about the future of humanity on the Earth.
Is developing Artificial Intelligence (AI) ethical?
If you’re even the slightest bit familiar with pop culture from the past 50 years, you know that we’ve been anxiously awaiting robots to become a part of our daily lives. From R2-D2 to the Jetsons, our future robot companions promise to be helpful and handy! But many people have their concerns: will the development of artificial intelligence end up REPLACING humans in the work force, pushing already high unemployment through the roof?!?!
Why the sky ISN’T blue
I actually have many, many more questions and answers so if you want to see them, like this video and let me know in the comments and I will edit them. Thank you for your support! I wouldn’t have gotten this far without you.
A history of Earth’s climate
Earth had a climate long before we showed up and started noticing it and it’s influenced by a whole series of cycles that have been churning along for hundreds of millions of years. In most cases those cycles will continue long after we’re gone. A look at the history of climate change on Earth can give us some much needed perspective on our current climate dilemma because the surprising truth is, what we’re experiencing now is different than anything this planet has encountered before. So, let’s take a stroll down Climate History Lane and see if we can find some answers to a question that’s been bugging Hank a lot lately – just how much hot water are we in?
