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This is the VOA Special English Development Report. Before refrigerators, homes usually had ice boxes. But another way to keep food cool without the need for electricity is to use an evaporative cooler. This is easy to make and does not even use ice.
Airline food has a bad rap, but it doesnt completely deserve it. When we fly at high altitude we simply cant taste as much. The main reason is the low humidity in the airplane cabin, which causes our sinuses to dry out. The humidity is kept around 4%
This is Scientific American's 60-Second Science. I'm Adam Hinterthuer. Got a minute? Heres a novel potential public health measure against the flukick up the humidity. The cold, dry months of winter signal the start of flu season. But previous resear
How to build an evaporative cooler. Also, how to prepare fruits and vegetables for cold storage. Transcript of radio broadcast: 08 June 2008 This is the VOA Special English Development Report. Before refrigerators, homes usually had ice boxes. But a
Part 2. The Times capsule. Keywords. time capsule, future, be passed on. Vocabulary. copper, aluminum, stainless, non-rusting, leakproof, humidity, Zimbabwe. A. Do you know what a time capsule is and what it is for? Listen to the following explanatio