NASA discovers lifeform based on arsenic

December 3, 2010

NASA-funded research has discovered a microorganism that lives and reproduces using arsenic instead of phosphorus. This discovery represents a drastic change in what we know about the elements necessary to sustain life.

Find a boatload of wildlife images at ARKive

December 1, 2010

At ARKive you will find images and videos of living things. The mission of the website is to highlight the world’s biodiversity in order to stimulate conservation.

Mathematics visualized at Khan Academy

November 8, 2010

Khan Academy, and its accompanying YouTube channel, contains more than 1,800 short videos on topics mathematical, biological, chemical, and even historical.