It is estimated that about 20-40% has experienced degradation in the last several decades, including 70% of freshwater use. To put things into further context, in 1960, arable land worldwide (per capita) was 0.42. It is thought this will be reduced to 0.19 in 2050.

If a recent study is any indication, getting more crop production from every inch of water is going to become even more important in the near future.The Institution of Chemical Engineers recently released a report describing the amount of hidden water used in food and drink production, estimated at up to 1.8 million liters per person each year — equivalent an Olympic-size swimming pool.