Security

Singapore admits police can access contact-tracing data

Singapore has admitted data collected for contact-tracing can be accessed by police despite earlier assurances it would only be used to fight the coronavirus, sparking privacy concerns Tuesday about the scheme.

Engineering

Seven ways to recycle heat and reduce carbon emissions

Heating of space and water in buildings accounts for about 44% of all energy consumed globally according to the International Energy Agency. This heat is still overwhelmingly generated by burning fossil fuels, making it an ...

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