Senegalese women spend an average of 17.5 hours a week just collecting water.
27
Every human spent about half an hour as a single cell.
144
It took 200,000 years for humans to reach 3 billion in number. It took 40 years for the next 3 billion.
11
Children grow faster in the springtime than any other season during the year.
108
Many people in parts of China eat insects. Some common insects are bean worms, scoprions, and locusts.
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