ChemistryThe scientific secrets to baking a perfectly moist chocolate cake Keeping your chocolate cake moist and delicious when you make it party-sized is tricky, but not impossible, says Catherine de Lange Regulars
PhysicsA single atom could drive a piston in a quantum engine In a quantum engine, a single atom can emit radiation that bounces around a reflective cavity and creates enough pressure to push down a piston ¿ìè¶ÌÊÓÆµ