Rishy Rich profile image 81

How long do you think mankind will survive?


I want numbers. Specific AD will do...

 

sort by best latest

tthudium profile image61

tthudium says

You can help the HubPages community highlight top quality content by ranking this answer up or down.

6 years ago
 |  Comment
wmspringer profile image60

wmspringer says

You can help the HubPages community highlight top quality content by ranking this answer up or down.

6 years ago
 |  Comment
profile image0

ankigarg87 says

You can help the HubPages community highlight top quality content by ranking this answer up or down.

6 years ago
 |  Comment