I think you will find that this was correct- at least in part. DDT was effective - however it wasn't biodegradable. It did not degrade for a long time , in fact, so it started to build up in birds and fish and there was a danger that it would build up in humans to dangerous levels. As it is effectively a nerve poison , this was worrying. So , a switch was made to pyrethium based insecticides, as well as attacking mosquitoes in other ways.
As far as birth control goes, it iis down to educating women- the longer a girl stays in school in developing countries, the fewer children she has and the later she starts having a family.
In the UK, there was no compulsory programme, women just had access to family planning and spontaneously started using it. my grandma had 9 children, my mother only 2. And neither women were unusual for their generation. having said that, the Pope does not help when he goes on about condoms bieng sinful, or not stopping the spread of AIDS. Any Amercian President who wn't back Planned Parenthood at home or abroad isn't really helping much, either.
no subject
DDT was effective - however it wasn't biodegradable. It did not degrade for a long time , in fact, so it started to build up in birds and fish and there was a danger that it would build up in humans to dangerous levels. As it is effectively a nerve poison , this was worrying.
So , a switch was made to pyrethium based insecticides, as well as attacking mosquitoes in other ways.
As far as birth control goes, it iis down to educating women- the longer a girl stays in school in developing countries, the fewer children she has and the later she starts having a family.
In the UK, there was no compulsory programme, women just had access to family planning and spontaneously started using it. my grandma had 9 children, my mother only 2. And neither women were unusual for their generation.
having said that, the Pope does not help when he goes on about condoms bieng sinful, or not stopping the spread of AIDS. Any Amercian President who wn't back Planned Parenthood at home or abroad isn't really helping much, either.