Human Shit Production - Total Daily Volume

Assume a conservative 1/100th cubic feet of human shit produced per capita daily:

.01 cubic feet * 6,602,224,200 (July 2007 pop. est.) = 66,022,242 cubic feet per day

METRIC- 66,022,242 cubic feet = 1,869,541,700 liters = 1,869,541.7 cubic meters (by comparison, an Olympic sized swimming pool only contains 2,500 cubic meters of water) 


ENGLISH- 132,044,484 cubic feet = 2,445,268.22 cubic yards = 493,880,667 US gallons
(by comparison, daily world beer consumption is only 82,191,780.8 gallons per day -- "Beer." World Book Encyclopedia. Chicago: World Book, 2001.)

How can we make sure our shit is recycled in the most efficient way possible?  I could see methane plants working well from the shit industry, but there would still be industrial waste left over from the unusable portion of shit- in essence, the shit of shit.