It's OK to have your Eggs in one basket

For the first time in history, more babies in the US are being born to women above the age of 30 when compared to their twenty-something counterparts. While men continue to produce sperms throughout their lives, women are born with a fixed set of eggs. A girl child has about one million follicles (egg sacs) at birth, but by puberty, they drop down to about 300,000. Out of these, only 300 to 400 get ovulated during a woman's reproductive lifetime.

So how did we stop this clock from ticking?