Forensic psychologist Scott Fraser studies how we remember crimes. He describes a deadly shooting and explains how eyewitnesses can create memories that they haven't seen. Why? Because the brain is always trying to fill in the blanks.
Nobel laureate and founder of behavioral economics Daniel Kahneman goes through a series of examples of things we might remember, from vacations to colonoscopies. He explains how our "experiencing selves" and our "remembering selves" perceive happiness differently.
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An explosion followed by gunfire in Kabul on Friday claimed the lives of at least two attackers and wounded a small number of civilians. The Taliban claimed responsibility for the attack, which appeared to have been aimed at offices of the International Organization for Migration and stretched over several hours as Afghan security forces tried to hunt down those responsible.
As night fell in Kabul, it was unclear whether the incident was over or not.