---
created_at: '2014-06-02T04:01:43.000Z'
title: Quality of a man’s sperm depends on how intelligent he is, and vice versa (2008)
url: http://www.economist.com/node/12719355
author: pwrfid
points: 79
story_text: ''
comment_text: 
num_comments: 32
story_id: 
story_title: 
story_url: 
parent_id: 
created_at_i: 1401681703
_tags:
- story
- author_pwrfid
- story_7831815
objectID: '7831815'
year: 2008

---
[Source](http://www.economist.com/node/12719355 "Permalink to Balls and brains | The Economist")

# Balls and brains | The Economist