Today we are investigating our moral obligations to our parents and our families. Do we owe our parents anything as adults? Would it be a good idea to license parents? We’ll explore these questions as well as the ethics of care, and some...

What IS Angular Momentum?

So you know what a star is, right? Well, if you don't, you should. We've talked about that big one in the sky a few times: The Sun! But there are a lot of bright dots in the night sky and not all of them are stars. Today, let's play a...

Evolution doesn't care about ethics - it cares about surviving and getting your alleles out there as much as possible. From that perspective, cannibalism can seem like a pretty good idea to some creatures. Hank introduces us to three...

In our final episode of Crash Course Sociology we are going to talk about what the health care system in the US looks like, the five A’s of health care accessibility, and a couple of contributing factors to the affordability of health...

I'm scared of spiders. I'm not afraid to admit it. I love them in a scientific sense, or from a "let me look at you from way over here" sense, but that's as close as I get. Here's a look at the science of why some of us are afraid of...

What if you could just drop your kids off at someone else’s place and let them have the responsibility? Well, there are some animals that do just that. They’re called brood parasites, and they lay their eggs in other animals’ nests and...

The human body is full of mysteries, but we can start to solve those mysteries with help from science and the bodies of grandma whales.

Garbage Doesn't Lie

The weak force has been causing trouble for a century, ruining everything physicists thought was true. But it might actually be responsible for your very existence.

Neglect in the first few years of a child’s life can have many adverse consequences, and one of the largest studies on these effects occurred after the Romanian Revolution in 1989.

We’re picking up where we left off last time, exploring the “ethics of care” and how it applies to extreme poverty. Are we responding to global poverty in a moral way? Philosophers like Peter Singer argue that we have an obligation to...

Comics creator Sam Hester is part of a growing movement within health care: graphic medicine. In short, literally drawing attention to a patient's needs and goals with pictures to foster better and more accessible caretaking. Hester...

Is the world overpopulated or underpopulated? While we worry about there being too many people for the planet to support, we can also worry about how fewer people in a given place may affect the economy, what may happen when there are...

Bad things can happen, but you can do a lot to be prepared for when they do! Join Jessi and Squeaks to learn what you should put in your emergency kit so you can be ready for anything!

Emotional abuse can be incredibly damaging, increasing a person's chances of developing depression and anxiety. But these behaviors can be subtle and difficult to spot, both from within and outside a relationship. It also often makes...

In which Hank details the five scariest things that will likely happen because of climate change.

Day to day, hospitals provide all kinds of services to help us get better and stay healthy, but during an outbreak, hospitals are the front line of the emergency. In this episode of Crash Course Outbreak Science, we'll look at how...

Every time you breathe, air travels down the trachea, through a series of channels, and then reaches little clusters of air sacs in the lungs. These tiny sacs facilitate a crucial exchange: allowing oxygen from the air we breathe into...

Mr. Andersen describes atomic structure and tours the periodic table.

The Hindu Kush Himalaya region is the world's third-largest repository of ice, after the North and South Poles -- and if current melting rates continue, two-thirds of its glaciers could be gone by the end of this century. What will...

The starving orphan seeking a second helping of gruel. The spinster wasting away in her tattered wedding dress. The stone-hearted miser plagued by the ghost of Christmas past. More than a century after his death, these remain...

Jessi and Squeaks just learned about terrariums, and now they want to make one for themselves! Join them to learn all about these tiny gardens in a bottle and how you can make one of your own!

America's school systems are funded by the 50 states. In this fiery talk, Bill Gates says that state budgets are riddled with accounting tricks that disguise the true cost of health care and pensions and weighted with worsening deficits...