​Scientists engineer worms to live the equivalent of 500 human years

In an experiment that even caught the researchers by surprise, nematode worms had their lifespans increased by — get this — five times. By tweaking two longevity-related genes, the researchers created an unexpected feedback effect that radically amplified lifespan. The technique could eventually be used to treat… » 12/16/13 2:20pm 12/16/13 2:20pm

Breakthrough technique for cutting and pasting genes into DNA works…

Last year, geneticists developed a new techniquethat allows them directly insert genes into bacterial DNA — or remove them. It was a powerful discovery, one that finally offered researchers a cheap and easy way to remove precise sections of a bacterial genome. And now, MIT researchers led by George Church have proven… » 1/15/13 4:00pm 1/15/13 4:00pm

Scientists build a biological pacemaker by injecting a modified virus…

Our heartbeats are triggered by a steady stream of electrical signals, which cause our heart muscles to contract with a regular rhythm. For some people, however, the ‘pacemaker cells' responsible for generating these pulses can fail, resulting in an erratic heartbeat. Normally, this problem is addressed by surgery… » 12/17/12 8:00am 12/17/12 8:00am

Geneticists create mice that find the smell of landmines irresistible

Scientists at Hunter College in NYC have genetically engineered mice to be 500 times more sensitive than normal to the smell of TNT. And because they're attracted to the smell, the researchers hope these "hero mice" will be used to detect landmines. Should the idea work, they anticipate the creation of other GMO mice… » 10/22/12 3:30pm 10/22/12 3:30pm