A billion is a difficult number to comprehend,
but one advertising agency did a good job of
putting that figure into some perspective in
one of its releases.
A. A billion seconds ago it was 1974.
B. A billion minutes ago Jesus was alive.
C. A billion hours ago our ancestors were
living in the Stone Age.
D. A billion days ago no-one walked on the earth on two feet.
WATCH THIS VIDEO - IT HELPS MAKE A BILLION A REAL NUMBER --