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

Bird heart controlled by infrared light is the first step toward laser…

Lasers can stimulate nerves and synchronize the pulsing of heart cells, but now they can control organs. In a breakthrough experiment, scientists used infrared light to control the beats of a quail's heart. » 8/16/10 7:30am 8/16/10 7:30am