New Additions

AC Grayling, a philosopher at Birkbeck College, University of London, and Lawrence Krauss, a theoretical physicist at Case Western Reserve University, have joined New Scientist as regular columnists. Appearing on alternate weeks, Grayling's column, "Mindfields" will explore "the implications, assumptions, hidden difficulties, and philosophical twists behind the science that's in the news," while Krauss' column, "World lines," will share this thoughts on "everything from the latest big results in physics and cosmology, to those volatile areas where science, religion, and politics do battle." —Heather Wax