A breakthrough model of a heart on a microchip can replace animal models that do not mimic human responses, say researchers.
In a TV show, Bill Maher is candid about how religion leads to violence.
Tensions in Ferguson, MO, which had begun to calm after weeks of unrest and demonstrations after the shooting of Michael Brown and the failure to indict Darren Wilson, are set to catch fire again after the police in nearby Berkeley, MO killed a young black man.
