The Science of Sex Ratios

Satoshi Kanazawa has written a series of blog entries on what determines the sex ratio in humans. It is fascinating stuff:

• engineers and scientists are more likely to have sons
• nurses and social workers are more likely to have daughters
• big and tall parents are more likely to have sons
• violent parents are more likely to have sons
• beautiful parents are more likely to have daughters
• sexually promiscuous parents have more sons

You can read the underlying articles here, here, here, and here.