Computer Sciences

Safe Paths: A privacy-first approach to contact tracing

Fast containment is key to halting the progression of pandemics, and rapid determination of a diagnosed patient's locations and contact history is a vital step for communities and cities. This process is labor-intensive, ...

Energy & Green Tech

Electric gains in battery performance

A high-performance version of the zinc-ion battery will enable stationary energy storage that promises to be cheaper, safer and more environmentally friendly than lithium-ion batteries.

Security

Location tracking apps and privacy implications

How much personal information can our phone apps gather through location tracking? To answer this question, two researchers—Mirco Musolesi (University of Bologna, Italy) and Benjamin Baron (University College London, UK)—carried ...

Consumer & Gadgets

Walmart plans $3.99 drone deliveries in six states by year-end

Walmart Inc. and partner DroneUp LLC plan to expand their drone-delivery hubs to 34 locations in six states by year-end, taking a big step toward scaling up aerial dropoffs for U.S. shoppers even though big regulatory hurdles ...

Energy & Green Tech

Battery-free 'smart' toys move closer to commercial reality

Rubber duckies could soon be at the forefront of an electronic revolution. In ACS Sustainable Chemistry & Engineering, scientists report they have used specialized nanogenerators that gather energy from mechanical vibrations ...

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