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A wearable sensor resembling a fitness tracker that measures glucose levels throughout the day could make life much easier for diabetics.

The CRISPR/Cas9 gene editing system, which uses a bacterial enzyme to slice DNA and insert new sequences, has exploded onto the scene in recent years, raising hopes of cures for devastating genetic disorders. Now, though, a less well-known method of gene editing has cured an anemic disorder in mice.

The fantastic capacity of animals and plants to recover after being damaged has served as inspiration for the development of materials that self-heal.

Electronic paper has changed the way many people consume written information: E-readers like Amazon’s Kindle sport light-reflecting screens with long battery life that are easy on the eye. But so far, attempts to market a color e-reader have been disappointing. Ectaco’s Jetbook Color line of devices, for example, was widely panned for its dark screen and muddy hues. Now, researchers think they may have a solution to the pervasive problem of color on e-paper — a new three-layer nanostructure material that is flexible, colorful, and low-energy.

Metal halide perovskites are emerging as promising materials for photovoltaic (PV) cells because of their high power conversion efficiencies and low processing costs.

The first time a lithium-ion battery is charged, a portion of its electrolyte solidifies and coats the negative electrode. Called the solid-electrolyte interphase, this coating prevents further loss of electrolyte during later discharge-recharge cycles. However, it also consumes a portion of the battery’s lithium, reducing the capacity of today’s commercial batteries by around 5–10%. With next-generation electrode materials, the loss is even higher — up to 30%.

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