Over 100,000 beats per day
A rate of 72 to 80 beats per minute is generally considered normal for a healthy human being at rest. If your heart beats at 80 times a minute : 4,800 times per hour – 115,200 times per day. 42,048,000 times per year – 3,363,840,000 times if you have 80 years old !
Medicine healthcare human hand measuring arm pulse isolated on white background
Beijing-Hangzhou Grand Canal of China
- The Beijing-Hangzhou Grand Canal is the oldest and longest man-made canal in the world and a famous tourist destination.
- The Grand Canal is 1,115 miles long (1,794 kilometers) with a history of over 2,500 years, and it starts at Beijing in the north and ends at Hangzhou in the south.
- The Beijing-Hangzhou Grand Canal links five great rivers, the Hai River, the Huai River, the Yangtze River, the Yellow River and the Qiantang River.
- The Grand Canal was built in 468 BC, and it went through renovations and enlargements three times in history, which were in the Spring and Autumn Period (770 BC-476 BC), the Sui Dynasty (581-618) and the Yuan Dynasty (1271-1368) respectively.
There are 196 countries in the world today. Taiwan is not considered an official country by many, which would bring the count down to 195 countries. Although Taiwan operates as an independent country, many countries (including the U.S.) do not officially recognize it as one.