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Video 2022-07-31    
Bacterial Growth

Keywords:

Bacteria doubles. Two goes to four, goes to eight, goes to 16, goes to 32. And in 24 hours, we have 2 to the 72 microbes sitting there. They obviously have the capacity to divide very, ver...


British English 2022-07-30    
California’s Desalination

Keywords:

IF CALIFORNIA were not already so famous for Silicon Valley and Hollywood, it might be renowned for the cluster of water-technology firms in its San Diego County. The reverse-osmosis (RO) spiral modul...


Pre-Intermediate 2022-07-30    
STORY - A Princess of Mars - Ⅲ

Keywords:

Another of the large air ships exploded high in the air.Members of the crew fell to the ground.The huge ship lost control and began turning again and again.Soon it was close to the ground.The warriors...


Intermediate 2022-07-29    
Galaxies are the Building Block of the Universe

Keywords:

Steve: First let's talk about did you see any gadgets that really blew you away? Larry: I saw some interesting stuff, but not necessarily stuff that I would say blew me away; you know, I mean, there ...


Video 2022-07-29    
How Far Can We Go – Limits of Humanity

Keywords:

Is there a border we will never cross? Are there places we will never reach, no matter how hard we try? Turns out there are. Even with science fiction technology, we are trapped in our pocket...


British English 2022-07-28    
The Converted Mall

Keywords:

THE old Rackspace headquarters was stuffed to the gills. In 2007 the company, which offers cloud-computing and web-hosting services, had more than 1,000 employees in downtown San Antonio. People were ...


Pre-Intermediate 2022-07-28    
World Toilet Summit

Keywords:

Every day, all over the world, groups of people meet together. They meet to talk about important issues. Business people meet about ways to improve their companies. Teachers meet about new ways to tea...


Intermediate 2022-07-27    
The Singularity

Keywords:

Steve: Compare and contrast. Rennie: Well I would be happy to do that Steve. You see your regular singularity is something you would find deep inside a black hole. What happens with a black hole is y...


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