Researchers have discovered that bacteria in the atmosphere may play a part in the production of rain and other forms of precipitation.

This process begins as bacteria on plants are swept into the atmosphere by wind. As they rise higher, ice forms around the bacteria and the ice-bacteria formation continues to grow larger.

Eventually the ice begins to melt and returns to the ground in the form of rain, carrying the bacteria with it.

For additional information, see:

• Evidence Of 'Rain-making' Bacteria Discovered In Atmosphere And Snow (Science Daily)