outnumbered

Climate change could affect the ratio of human males to human females that are born in some countries, a new study from Japan suggests.

The researchers found that male fetuses may be particularly vulnerable to the effects of climate change.

This suggests that climate warming or climate extremes could negatively affect male fetuses, study researcher Dr. Misao Fukuda, of M&K Health Institute in Ako, Japan, told Live Science in an email.

LiveScience, 30 Sep 2014