jbottz writes: Apple today launched iTunes Plus, offering DRM-free music tracks at $1.29 per song. Launching with EMI's digital catalog of singles and albums, the tracks are encoded in the 256 kbps AAC file format. In addition, iTunes customers can now upgrade previously purchased EMI content to iTunes Plus tracks for 30 cents a song and $3.00 for most albums.
MattSparkes writes: "Tadpoles can regenerate their tails thanks to a technique that alters the electrical properties of their cells, a new study shows. The build-up of electrical charge at the site of amputation helps guide tissue regeneration. They speculate that doctors might one day be able to regenerate tissue in patients — such as those who have suffered spinal cord injury, or even those who have lost fingers — by altering the flow of positively charged molecules out of cells."