As sperm swim they transform chemical energy into motion, the way a car’s engine uses gas to propel you down the road. Like that engine, the process is complicated—if just one part stops working, the whole system can grind to a halt. This idea might lead to a contraceptive for men that’s reversible.
Technology moves forward in leaps and bounds, but some designs never change. Which is why thousands of men embarrass themselves on a daily basis as they struggle to open condom packaging. That's why these one-handed wrappers need to exist.
If you rely on the female contraceptive pill to avoid having babies, you might want to check the packet: Pfizer just recalled a million packs because a fault means they could increase the chances of getting pregnant. Deep breaths: it'll probably be fine.
We're all familiar with the power that hormones have over behavior and mood, but did you know that sex and stress hormones can affect how we recall past events? Now, a recently published study has shed light on the memory-altering effects of one of the most widely used hormone-regulating drugs in the world: birth…