VIRTUAL SCIENCE: New this week: Labster, a 12-person company based in Copenhagen Denmark (with a couple of lucky employees in Bali), launches a fresh version of its science experiment simulation program. The program is built on a mathematical simulations engine--which means that students will get different "results" from their virtual experiments depending on the initial conditions. The startup has collaborated with the Technical University of Denmark and Johns Hopkins University in building its mathematical simulations. More than 10,000 students already use Labster at universities and high schools in Europe and the U.S. Eight biotech labs are available for free for individual students. Groups of students and schools will pay fees. Similar to Late Nite Labs, Labster promises that students will have sophisticated interactions without all the pricey hardware.