Science

Body On A Chip

Today we'll  talk about printing body parts.  I'm not talking about antics in the copy room. I mean bio-printing three dimensional human organs for medical research.

There are several types of 3D printers, but  the generic model for this particular type involves a nozzle that squirts out a building material like an ink. Mounted in a frame, it moves side to side as well as up and down. This allows for travel to any point within the printer's range; “printing” material layer by layer. The result is an accurate translation of a digital computer file into a solid three dimensional object.

Arctic Methane Bubbles Not As Foreboding As Once Feared

European scientists were alarmed in 2008 when they discovered streams of methane bubbles erupting from the seafloor in Norway's high Arctic. This gas, which contributes to global warming, was apparently coming from methane ice on the seafloor. A follow-up study finds that methane bubble plumes at this location have probably been forming for a few thousand years, so they are not the result of human-induced climate change. But continued warming of ocean water can trigger more methane releases in the Arctic, with potentially serious consequences to the climate.

Want To Make Your Life Better? Keep Track Of It

The Quantified Self movement promotes something called life logging. That means tracking all kinds of details of your life in order to improve it. To find out more about the topic, David Greene talks to two people involved with life logging: Kitty Ireland, who works for a life logging app called Saga, and to David Goldstein, who turned to life logging with the help of a coach.