Using nature's own tricks, we find out how to avoid mosquito bites, grow more crops and keep the weeds away in this week's Naked Scientists. We find out why mosquitoes prefer some people to others, and how to use pheromones to turn an insect's sex-drive against it! Also, why dentists could use plasma to cut down on drilling, why breast is best for bigger brains and why Popeye was right, spinach really does make you stronger. Plus, in Kitchen Science, we brave a box of biting mozzies to see if insect repellent really does repel!
The thing about the pheromons was interesting. When bees swarm, the queen emits quite a powerfull pheromone that is easy to smell. You can get a synthetic one so that you can get the bees into a box. I think it may be confused with some perfumes so the bees tend to land on these women that knock the top of their perfume bottle without realising it before they go for Sunday lunch. It's just unfortunate that the bees are downwind of them.
I was curious about that two as my friends daughter was on a course very similar to that...
Just finished listening great show guys! Was very interesting! Karen W., Wed, 14th May 2008
I thought B12 was mentioned somewhere. I always have a low B12 count. I don't get that bothered by midges though even though we live in midge heaven. turnipsock, Wed, 14th May 2008
The explanation for pre-menstrual cravings made no sense whatsoever: at 28 days the body is getting ready to flush out the unfertilized egg, not preparing for pregnancy (unless the egg is fertilized, which is a whole other story.) My humble opinion is that cravings are culturally, not physically induced. Sunwarm, Thu, 15th May 2008
On the contrary.I would argue that in order to maximise the chances of pregnancy the body needs to ensure that it is vitamin and micronutrient replete BEFORE ovulation occurs so that there is ahighly receptive endometrium and healthy biochemical milieu to greet the released egg and support migrating sperm. This will increase the likelihood of successful fertilisation, migration and implantation (pregnancy).
Thank you for an excellent show!
We try to keep the pond full of fish as they eat the mosquito larvae.