Secrecy is often used as a legal shield to cover up illegal actions by businesses. Anti-corruption activist and TED Prize winner Charmian Gooch explains why we should care — and what we should do.

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Three men were executed by lethal injection in the United States last week. Helen Walters argues that the death penalty is wrong — and a new philosophy of criminal justice is desperately needed.

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In his 2013 TED Talk, physician Gary Slutkin noted that the spread of gun violence followed the patterns of infectious diseases. Strange, but true. Here, the talk is given a bold visual treatment.

Marc Goodman
 of the Future Crimes Institute and Singularity University shares his thinking on the promise — and threat — of drones.