含中文字幕节目   

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- [Narrator] There's a secret pattern hidden on banknotes from around 30 countries around the world. Its purpose? To prevent photocopiers from being able to reproduce money. It's just one of the...

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There are 3 billion billion billion prochlorococcus in the ocean That’s 10 to the 27th, or an octillion This picoplankton is so tiny -- a drop of seawater contains 20,000 cells -- but together t...

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Business. Bartleby. How to get people to resign. Without torching the organisation or losing your best employees. The gut reaction that a manager has when an employee announces their resignation...

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Leila Ben Gacem wants to rebuild an area in Tunisia known as the Medina of Tunis. A local official in a village outside of the capital, Ben Gacem takes visitors to the ancient part of the city once k...

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Most of today's airliners are powered by turbofans. To understand what goes into maintaining one, let's take a look at how it works. Air is sucked through the large fan at the front. 80% byp...

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When Neil Armstrong set foot on the Moon in 1969, 600 million people tuned in to watch. By 1972, enthusiasm had waned a little, but Apollo 16 carried a significant, if little celebrated, ...

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International students in the United States are concerned that technology job reductions will make it hard to get a good return on their education. For the last three years, technology companies, inc...

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To visit is to get a sense of how it works. On September 4th those in the room included three district commanders; the Suffolk County district attorney, Kevin Hayden; senior probation officers; sta...