Was Malthus right about carrying capacity?
Thomas Malthus concluded that humanity is bound to outgrow Earth's carrying capacity. The prediction was based on humanity's exponential growth and the linear growth of the food supply -- but was he c...
9 Jun 201124min
How the Underground Railroad Worked
As early as 1786, groups assembled to help slaves escape lives of bondage. And, as the 19th century progressed, the emergent Underground Railroad grew more sophisticated in aiding escaped slaves. But ...
7 Jun 201135min
How Fear Works
Fear results from your brain's reaction to a stressful stimulus, and -- though it may be unpleasant -- it plays a crucial role in the life of every human being. But how does it work (and why)? Join Jo...
2 Jun 201143min
How Nicotine Works
Sure, nicotine doesn't cause cancer, but it does rearrange the brain's reward system. Humans have been ingesting this plant for more than 6,000 years, but we generally understood little of it. Join Ch...
31 Mai 201133min
How do I start my own country?
Whether through revolution, colonization or other means, every country has its start somewhere. But how does the process work? Join Josh and Chuck as they explain how countries get created -- and why ...
26 Mai 201134min
What is terror management theory?
Terror management theory isn't about mid-level bureaucrats in Al-Qaeda -- so what exactly is it, and what does it say about human culture and our perception of mortality? Join Chuck and Josh as they e...
24 Mai 201126min
What is parallel evolution?
In the process of parallel evolution, two seemingly unrelated species living in isolation can evolve surprisingly similar traits -- but how does it work, and why does it happen? Join Chuck and Josh as...
19 Mai 201127min
Can the sun kill you?
Could the sun, typically known for providing light and warmth, kill us? The Apollo 17 mission almost resulted in tragedy due to a mega-flare -- and astronauts aren't the only ones at risk. Join Josh a...
17 Mai 201132min
