150 million kmē is the land on this planet
for 7 billion people you need
7 billion kmē for all the graves
if there is only 150 million kmē of land
you need an extra 6.850 million kmē
to bury everyone
lol (sorry i needed to laugh 'spontaniously')
thanks to the gps family's now will find the graves to a precision of cm's
amazing what the modern world can do for us
http://www.youtube.com/watch?v=smu6_m3FNMI