Energy experts predict that the global production of oil will soon start to decline, what's referred to as peak oil. Now while we may not be there yet, there was a time in our history when we did reach a similar plateau, but it was a very different kind of energy source — one that could only be extracted from the heads of sperm whales. It was the intense demand for this sperm whale oil, what's called spermaceti, during the 18th and 19th centuries that nearly drove the whales into extinction. And it was only through the development of a rather modest technological innovation that the whales were saved at the last minute.
Risky contraceptive methods some women are forced to use – in pictures
Happy Sperm Soap on a Rope for Sale - ScienceAGogo
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BCBenefits makes it easier than ever to get birth control for free. The sponge is a round piece of white plastic foam with a little dimple on one side and a nylon loop across the top that looks like shoelace material. The sponge works in two ways: It blocks your cervix to keep sperm from getting into your uterus, and it continuously releases spermicide. Think of it like a bouncer at the nightclub door to your uterus.
Women's rights and gender equality. In Moldova, some women apply vinegar or lemon slices to their vagina after sex in an attempt to prevent pregnancy. They believe the acidity will kill sperm. Ludmila Bologan, an obstetrician-gynaecologist, says she was shocked to discover that women are still doing this.