Länk - Färre pojkar tros bero på miljöfaktorer

published Apr 10, 2007 05:21 by admin ( last modified Apr 10, 2007 05:21 )

They note that the decline in births is equivalent to 135,000 fewer white males in the U.S. and 127,000 fewer males in Japan over the past three decades and suggest that environmental factors are one explanation for these trends.

Läs mer: Impending dude shortage? | Science Blog