In the July 8 SN: DNA traces many roads to domestication, seeking quantum supremacy, the 25th anniversary of the qubit, bones’ secret messages, how monkeys see faces, redating Homo sapiens, a record-breaking gas giant, strange dragonfly wings and more.
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.
WRITING ON THE WALL A new type of radiation detection could make it much harder to keep radioactive material under wraps.