How Did the Truman Doctrine Change U.S. Forei...

Instead of putting a pan on a source of heat (like a gas burner or electric element), an induction cooktop creates heat in the pan itself thanks to the principles of electromagnetism and resistance. Learn how it works -- plus the pros and cons of the technology -- in today's epis ...  Show more

In the 1700s, fossil finds along the Ohio and Hudson Rivers indicated that North America was home to mysterious beasts. Learn how mastodon bones proved both that extinction is real and that America isn't full of degenerates in this episode of BrainStuff, based on this article: ht ...  Show more

President Harry Truman's address to the United States Congress, and the world, in March 1947 is seen by some historians as marking the start of the Cold War.In it, the President committed the USA to the role of defender of global democracy, and pledged to contain the expansion of ...  Show more

America solidified its dominant posture in the international order following World War II and largely held that position for the following half-century. But as problems have accumulated at home and abroad, Americans are reconsidering their country’s role in the world, and so are ...  Show more

The creation of atomic weaponry changed human civilization forever, but it also left its mark on the Earth itself -- in both obvious and subtle ways. In this episode of Stuff to Blow Your Mind, Robert and Joe discuss some of the ways in which the world would not be the same. Lear ...  Show more

The creation of atomic weaponry changed human civilization forever, but it also left its mark on the Earth itself -- in both obvious and subtle ways. In this classic episode of Stuff to Blow Your Mind, Robert and Joe discuss some of the ways in which the world would not be the sa ...  Show more