Are women really at risk of disappearing?"reaction"

Published in June 14th,11, an article on the week magazine tittled " Are women really at risk of disappearing?" is examine a claim made by journalist Mara Hvistendahl , the author of  " Unnatural selection:Choosing boys over girls and the consequences of a world full of men " , where she is suggesting the possible existences of female gender extension phenomenon. In her book she presented statistics to proof her claim. For example in China the ratio for boys births to girls births is 120 to 100 which gives a clear example on tensity of the issues presented.
The article mentioned how more than some couples in countries such as India and China tend to avoid having females by aborting them after discovering the baby gender via ultrasound . Researches found out that 600,000 female fetuses are aborted in India each year which under line Mara's speculations and claims  . Governments are trying according to the article to minimize this dilemma before it get out of hand by providing incentives for parents who give birth to a baby girl. For instance , In Fuji, parents who have two girls get a $150 annual pension for life, as well as health care, housing, and education benefits.
Personally , I do believe that this problem exist , and I have seen live evidence of the validity of Mara's claims . But on the other hand I also believe that nature has it own ways of balancing things out. The ratio of males vs. female births in china is in favor of males but in another place on earth  females probably exceed males births , a result that will balance the whole equation .It is similar to what had happen after War World I &II , In a 2000 study , Jan Graffelman and Rolf Hoekstra conducted a research that covered birth data for the U.S. and selected European countries from the mid-1800s onward, focusing on the first and second world wars post results , their was a decrease in male gender births postwar , this was explained as nature way of correcting human interventions. This is actually called Fisher's principle. Ronald Fisher, is an English biologist and statistician that explained it all in 1930 , where he said that the forces of natural selection militate in favor of roughly equal numbers of girl and boy babies.