PETS英语

　Have you ever looked up at the night sky and wondered why the stars twinkle? In fact, the stars themselves do not actually twinkle--the illusion is caused by the numerous layers of atmosphere betwe...

　With the advent of freezers and mechanical refrigeration, ice cream production soared, with 150 million gallons of ice cream being made in the U.S. in 1919. Today, one simply has to walk down to hi...

This clarity is called “mindfulness“. Being mindful means that you are aware of what you are thinking without becoming caught up in your thoughts. It takes practice, but with time, that big test w...

Meditation has little to do with escaping problems or thinking about nothing. Instead, the breathing techniques help you calm down and think more clearly about your feelings. The issues on your mind u...

　To start meditating, find a place where you can sit or stand comfortably for a little while and concentrate. Close your eyes and start taking slow breaths. Focus on the air moving in and out of you...

Wars kill millions of people. But war is not the only cause of large-scale death. 700 years ago a terrible disease called the Bubonic Plague killed more than 40 million people. In Europe it killed 1 p...

　In the 20th century, machines are run mostly by electricity. Two hundred years ago electricity was not in common use. Machines were often run by water, and therefore many factories grew up by runni...

Meat is kept fresh by storing it in refrigerators. However, there are other ways of keeping meat fresh. For example, it can be rubbed with salt or can be dried or smoked. These ways were popular befor...

A hurricane is a storm which can cause terrible destruction and death. Hurricanes bring tremendously strong winds, so strong they can knock down buildings. The wind travels as fast as a speeding autom...

Primitive umbrellas have been used for more than 2,000 years. However, the type of umbrella we use today was designed less than 3 hundred years ago. Our present umbrella is made of steel covered with ...