Blackouts and Babies

during the last week, several villages all over Ukraine had blackouts

http://www.kyivpost.com/news/nation/detail/56290/

This gives a nice natural experiment to see how blackouts affect for example fertility. There is some literature on this, see for example

http://www.snopes.com/pregnant/blackout.asp

and

http://www.econ.jhu.edu/People/Hu/fertility_revised.pdf