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Pre-Intermediate 2022-07-20    
Snoring - A Sleep Problem

Keywords:

Mike is a teacher. He lives in California. Mike had a problem. He was always tired. Often, he would fall asleep at work. He would fall asleep while watching television. He even almost fell asleep whil...


Intermediate 2022-07-19    
Talk with the Manhattan Project Physicists

Keywords:

Steve: Now a few of the other Manhattan Project physicists: Murray Peshkin, Leonard Jossem, Roy Glauber, Al Bartlett, and Hans Courant. Peshkin: I am Murray Peshkin. I was among the very youngest peo...


Video 2022-07-19    
Treating HIV Infection with a Reverse Transcriptase Inhibitor

Keywords:

Let's review how HIV's reverse transcriptase works. The yellow strand is HIV RNA; it's attached to the reverse transcriptase enzyme. Reverse transcriptase uses the hosts cell nucleotides....


British English 2022-07-18    
The Effects of Start-ups on Employment may be Modest

Keywords:

A MAN walks into a conference room at the W hotel in downtown Austin. The setting, sleek and hushed, says business. The trainers—red, puffy, and paired with a sports coat—add a wink: new business. ...


Pre-Intermediate 2022-07-18    
1962 Project Mercury

Keywords:

The American space agency opened for business October first,nineteen fifty-eight.NASA's most important job was to send an American into space and return him safely to Earth.Project Mercury was the pla...


Intermediate 2022-07-17    
From Carbon to the Cretaceous

Keywords:

Steve: Hi Davide, good to talk to you. Castelvecchi: Hi Steve, great talking to you. Steve: So first of all, let's talk just for a moment about what is the AGU meeting. What are the kinds of subject...


Video 2022-07-17    
Acoustic Holograms Create Complex Floating Patterns

Keywords:

This tiny paper boat is being pushed along by an ‘acoustic hologram’. The ripple on the surface of the water is created by ultrasonic waves emanating from a speaker underneath. But – cr...


British English 2022-07-16    
To Slim Agency's Rule Book

Keywords:

CHEERS greeted Barack Obama’s hiring of Cass Sunstein away from the University of Chicago. Mr Sunstein, a lawyer, now head of the Office of Information and Regulatory Affairs, is in charge of lifting ...


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