In the Aug. 5 SN: Seismologists study North Korea’s nukes, souped up solar cells, Larsen C finally cracks through, marshmallow test goes to Africa, bacteria’s mysterious architecture, an entanglement distance record, solar eclipse paths to come and more.
WHO’S GOT THE BLUES? Researchers in Japan have genetically engineered the first blue chrysanthemum.
LAYER UP Researchers are betting on a class of sunlight-absorbing materials called perovskites to improve today’s solar cells. A perovskite’s cagelike crystal structure (right) surrounds a chunky ion such as methylammonium. The red, purple and orange balls are ions that can be varied so the material absorbs different wavelengths of light in its 3-D form (left).
T. Tibbitts; SOURCES: ROBERT J. CAVA/PRINCETON UNIV.; OSMAN M. BAKR AND OMAR F. MOHAMMED/SCIENCE 2017
TIME OUT Electrons can escape their atoms, even if the particles don’t have enough energy to do so, through quantum tunneling. But such tunneling takes time, a new study suggests.