gpronger writes "The ATIC (Advanced Thin Ionization Calorimeter) has potentially discovered the presence of dark matter close (only 3000 light-years) to our solar system. The system detected a large-amount of high energy cosmic rays which match the theoretical signature of dark matter annihilating itself. The universe is believed to be composed of about 25% dark matter, but there has been little evidence of it. This discovery, if correct, would be the first." The paper was published in Nature , but it requires a subscription to see beyond the abstract.

Slashdot users of the Discussion2 system now have a new 'Update' button visible on their floating control slider, as well at the end of the discussion. This button will update your page to include comments posted since the page was loaded, so now you can keep discussion pages up to date without doing a full reload. It's nowhere near complete yet, but it's a nice step that goes a long ways towards making it easier to use larger discussions while they are actively updating. If you aren't using Discussion2, you need to log in, and toggle the checkbox visible on every page. You probably need bother only if you are using Firefox 1.5 or 2.x or Safari. You can send bug reports to me if you want.