When a car accident occurs, the sensor triggers a chemical inside the airbag called sodium azide to
[501호]
Charlie is an 11-year-old Labrador retriever. He became blind after both of his eyes were removed be
[500호]
McDonald’s is one of the most popular fast food chains. McDonald’s restaurants usually open in c
[499호]
A homi is a farming tool with a sharp and curved metal part. Korean people use it to dig out holes i
[498호]
Many companies have invented robot chefs, and they keep innovating them. There are two types of robo
[497호]
Sometimes, a ball of light falls from the sky. We call this a shooting star. They are actually bits
[496호]
British scientists have developed chickens that lay special eggs. These eggs are rich in proteins th
[495호]
Human beings first made tools in the Old Stone Age. You may think making a stone tool would be easy.
[494호]
Nick Cave is an American artist who makes Soundsuits. When you wear them, they make sounds when you
[493호]
Ewan McNay, a behavioral neuroscientist at the State University of New York at Albany, revealed an i
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