Cosmic rays enter the earth's atmosphere in large numbers every day.For example, every person is hit by about half a million cosmic rays every hour.The carbon-14 atoms that cosmic rays create combine with oxygen to form carbon dioxide, which plants absorb naturally and incorporate into plant fibers by photosynthesis.
So here is my Internet dating advice from the front lines.
In China, parents of unmarried children can take photos to a marriage market to find them a spouse, while in Zulu culture, a man must give his new in-laws cattle to be accepted into the family. At least you don’t have to learn a special whistling code to tell how you feel.
In the Kickapoo tribe in Coahuila, Mexico, male suitors have to whistle their sweet nothings.
Carbon-14 is radioactive, with a half-life of about 5,700 years.
For more information on cosmic rays and half-life, as well as the process of radioactive decay, see How Nuclear Radiation Works.