technology

Conflict & Justice

New York City's hijacked hashtag launches a global conversation on police brutality

Updated

When the New York Police Department encouraged its followers on Twitter to share photos of themselves with NYPD officers, the result was not what they expected. Two days later, the hashtag has been mimicked in a half dozen cities around the world to showcase police brutality. But the social media effort has had another consequence: it has started a global dialogue about the perception of police and policing in different cities.

Science, Tech & Environment

Study shows US could convert its economy to renewable energy without battery breakthrough

For years, the knock against renewable energy has been that it doesn't work because it's intermittent. So research has centered on how to store the energy for future use. Now a new study from NOAA suggests the US could quickly convert to wind and solar power without waiting for battery storage technology to catch up.

Science, Tech & Environment

A breakthrough may make the mega flow battery commercially viable in the near future

Wind and solar power have the potential to reduce the growth of greenhouse gases and slow the progression of climate change. But since the sun doesn’t always shine and the wind doesn’t always blow, the big hurdle in expanding the use of renewables is the lack of cheap and efficient storage of that energy. That could be about to change.