All posts tagged: Magnetic

The 2 behaviors that make you socially magnetic

The 2 behaviors that make you socially magnetic

A few months ago, I was queuing for free tacos at my coworking space in London. And because nothing unites people like free food, half the building had shown up. This gave me the opportunity to shamelessly eavesdrop on the group of guys in front of me. Three of them stood out.  The first talked about himself a lot, jumping in on other people’s stories to tell his own slightly better version of whatever had just been said. His colleagues let him, but their faces had gone politely blank, the look people wear when they’re waiting for something to end. The second was his opposite: warm and pleasant whenever someone spoke to him, but only when someone spoke to him. He gave brief answers, handed the floor straight back, and initiated nothing. It was the third who intrigued me the most, because he was the one the whole group kept reorienting toward. What stood out was the way he moved attention around the group, asking questions and handing the floor to different people, while being …

Sperm have been made magnetic to allow IVF inside the body

Sperm have been made magnetic to allow IVF inside the body

Embryos have been formed from sperm that have been made magnetic to allow remote guidance towards an egg. The technique may allow IVF to be performed inside the body so it involves fewer invasive procedures and potentially has better success rates. “Our ultimate idea is to do assisted reproduction in vivo, taking advantage of the body as a natural incubator,” says Mariana Medina-Sánchez at nanoscience institute CIC nanoGUNE in Spain. Conceiving naturally is harder when sperm numbers or motility are low, because too few sperm make it into the fallopian tubes to fertilise an egg. Assistance can be provided by IVF, in which sperm are placed with an egg in a dish, or directly injected into an egg, to form embryos. However, IVF involves hormone injections, egg retrievals and embryo transfers, which are invasive and can have unpleasant side effects. Many IVF cycles are also unsuccessful, partly because the artificial environment in which the sperm and egg meet and the multiple manipulation steps can affect embryo viability. To address these issues, Medina-Sánchez and her team wanted …