A Finite Planet!
Take away 75% for the oceans and lakes. Take away another 12.5% for the polar ice caps, deserts, swamps, and mountains. And then another 9.5% for land that is too rocky, too wet, too steep, or too cold. That leaves only 3% of all the available area on the Earth for agriculture! This small parcel of land is all that farmers have available to feed, clothe, and fuel our growing population
At Least There's Plenty of Water!
Even though water covers 75% of the Earth's surface, fresh water is very scarce. Less than 1% of the total water available on Earth is suitable for human use.
What About Topsoil?
Did you know that the entire agricultural system relies on about 2 inches (5 cm) of the outer layer of the Earth’s crust? These two delicate inches of topsoil are home to millions of microorganisms that recycle nutrients and ensure the growth of our plants. Topsoil is a critical component to the overall balance since it takes 500 years to make one inch of topsoil.
Can aquaculture provide enough protein for the growing population? [+]