TechnologyGoogle launches $5m prize to find actual uses for quantum computers Existing quantum computers can solve some problems faster than any ordinary computer, but none of those problems has any practical use. Google and XPRIZE hope to change that ¿ìè¶ÌÊÓÆµ
PhysicsWhy string theory has been unfairly maligned - and how to test it String theory is widely considered beyond empirical investigation. But we could conceivably test it thanks to ancient particles called moduli, which might appear in astronomical observations, says theorist Joseph Conlon Features