Readers write in about ending poverty, Halliburton and the Guptas, and post-truthisms.

A commission investigating the Gulf oil spill found decisions intended to save time and money created an unreasonable amount of risk.

Nigerian anti-corruption authorities have summoned top officials from Shell and Halliburton as part of separate investigations into alleged bribery.

A series of six black-and-white prints on display in an unassuming corner of the New York Public Library have sparked controversy on the airwaves and blogosphere quite out of…