Tag Archives: Hank Green

The Hydrologic and Carbon Cycles: Always Recycle! – Crash Course Ecology #8

Adorable story alert! So I was hanging out with my 2-year-old second cousin in the ocean in Florida and we’re jumping up and down with the waves and it’s fun but then the water got all calm and I said, “Oh, no more waves!,” because, like, that’s the top tier of communication I’m going for… Read More »

Pollution: Crash Course Ecology #11

I think we should do this one outside. This is better. This is beautiful. Just, oh, of course… except for this. Litter – is a kind of pollution, but like barely. Like, I would rather it not be here. It makes me kind of angry and it makes nature less pretty, but environmentally, there’s a… Read More »

Beasts of No Nation: Crash Course Film Criticism #14

There are movies about war. And there are movies about kids. But the movies about war starring kids are more rare. Some are science fiction, like 2013’s Ender’s Game. Others follow children trying to survive during wartime, movies like Stephen Spielberg’s Empire of the Sun starring a young Christian Bale. Or John Boorman’s semi-autobiographical Hope… Read More »

Ecology: Crash Course History of Science #38

We’ve explored the origins of modern biology, the earth sciences, and even the sciences of outer space. Now it’s time to put these disciplines together. Starting around 1900—but picking up during the Cold War—scientists looked beyond individual species and ask questions about how whole systems of living and nonliving things change together over time. Where… Read More »

How to Get Involved in Your Local Community

Hi! I’m Rachel Calderon Navarro and this is How to Adult. One of the coolest parts of being an adult is that you have agency. If you don’t like something, you can work to change it. And if you care about something, you can help make it even better. By getting involved in your community,… Read More »

Natural Law Theory: Crash Course Philosophy #34

Thomas Aquinas was no dummy. Remember him? The Italian fella? Christian monk? Philosophical superstar of the 13th century? Aquinas thought morality was important for everyone, and that being a good person was a vital part of God’s plan for each of us. But he knew that not everyone had been exposed to the Bible, or… Read More »

What Is Justice?: Crash Course Philosophy #40

Justice is one of those things that people talk about all the time, without really being specific about what they mean. Activists talk about economic justice. Police and lawyers talk about criminal justice. Parents, teachers, and students talk about justice a lot, too, though they may never use that word. When there’s a fight on… Read More »

Ecology – Rules for Living on Earth: Crash Course Biology #40

For the last 38 episodes of Crash Course Biology, we’ve talked about how to make an organism. And you know what I’ve learned in those 38 weeks? Putting a living thing together is hard! There are molecules that make up organelles that run cells, which come together to form tissues, which make up organs that… Read More »

Human Population Growth – Crash Course Ecology #3

If being alive on earth was some kind of contest, humans, I think, would win it hands down. As a population of organisms, we’re the Michael Phelps of being alive, only we have like 250,000 times more gold medals. Last week, we talked about exponential growth, when a population grows at a rate proportional to… Read More »

Catholic Counter-Reformation: Crash Course European History #9

Hi I’m John Green and this is Crash Course European History. So, last week we took a break from religion to show that amidst warfare and bitter controversy over doctrine, people were inventing and innovating and enslaving. Europeans were eating new foods, hanging out more in cities, and making advances in commerce and legal protections… Read More »