Flipping particle could explain missing antimatter - In its early days, the cosmos was apparently a cauldron of radiation & equal amounts of matter and antimatter. As it cooled, all the antimatter supposedly was annihilated in collisions with matter - but for some reason the proportions ended up lopsided, allowing some of the matter to form the elements, stars and galaxies we see today. The precise reason for this is unknown to physics, perhaps until now. more inside

Match It For Pratchett , by Pat Cadigan (his Livejournal blog). Donate to Alzheimer's Research Trust to match Terry Pratchett's US$1 million donation. more inside