Solutions

A person in China scans a QR code with a smartphone to register their real name before getting off a bus in Wuhan, China. Zhang Chang/China News Service via Getty Images

The US is rolling out digital contact tracing. How has it been working in other countries?

vox.com - by Shirin Ghaffary - April 18, 2020

If and when lockdown restrictions are lifted in the US, would you agree to let the government anonymously track your interactions with people within a 6-foot radius to control the spread of Covid-19?

That’s an increasingly urgent question as President Trump and state governors debate how and when to safely reopen the US economy — and as technology is being touted as a solution that would help people reenter public life.

And tech giants are stepping up. Last week, Apple and Google announced a plan to turn phones into opt-in Covid-19 tracking machines that would, if all goes as planned, make it easier for health officials to identify and alert people if they’ve been exposed to the virus.

Patrick Schnell, a participant in the Brooklyn Microgrid, with solar panels on his roof in Gowanus.
Credit Kevin Hagen for The New York Times

nytimes.com - by Diane Cardwell - March 13, 2017

 . . . In a promising experiment in an affluent swath of the borough, dozens of solar-panel arrays spread across rowhouse rooftops are wired into a growing network. Called the Brooklyn Microgrid, the project is signing up residents and businesses to a virtual trading platform that will allow solar-energy producers to sell excess-electricity credits from their systems to buyers in the group, who may live as close as next door.

The project is still in its early stages — it has just 50 participants thus far — but its implications could be far reaching.

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John Goodenough, coinventor of the lithium-ion battery, heads a team of researchers developing the technology that could one day supplant it.  Photo: Cockrell School of Engineering

spectrum.ieee.org - by Mark Anderson - March 3, 2017

Electric car purchases have been on the rise lately, posting an estimated 60 percent growth rate last year. They’re poised for rapid adoption by 2022, when EVs are projected to cost the same as internal combustion cars. However, these estimates all presume the incumbent lithium-ion battery remains the go-to EV power source. So, when researchers this week at the University of Texas at Austin unveiled a new, promising lithium- or sodium-glass battery technology, it threatened to accelerate even rosy projections for battery-powered cars.

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