For future spacefarers, gardening will be a matter of survival. Not only will plants provide food but plants will also work to make air breathable and water drinkable. Humans and plants are ideal space traveling companions. Humans consume oxygen and release carbon dioxide.
Plants return the favor by consuming carbon dioxide and releasing oxygen.
Plants and microbes can also work to purify water. The only input needed to keep such a system going is energy in the form of light. Learn more about the challenge. To help understand and predict natural disasters, to study the spread of disease and famine and forecast the effects of El Nino. NASA provides current eddy activity that helps commercial fishermen and the oil drilling industry.