Twins in Malawi helped scientists discover a role the gut microbiome appears to play in severe malnutrition. Photograph courtesy of Tanya Yatsunenko hide caption

itoggle caption Photograph courtesy of Tanya Yatsunenko

The British have long said, "Keep calm and carry on." But the catchphrase may need an update for health care. Keepcalm-o-matic.co.uk hide caption

itoggle caption Keepcalm-o-matic.co.uk

Could you say "no" to this face? Christoph Bartneck of the University of Canterbury in New Zealand recently tested whether humans could end the life of a robot as it pleaded for survival. Christoph Bartneck hide caption

itoggle caption Christoph Bartneck

Forty years after Roe v. Wade --€” and nearly 50 years after the start of efforts toward legalizing abortion €-- the debate still carries on, with younger generations ready to take up the cause for both sides. Mark Wilson/Getty Images hide caption

itoggle caption Mark Wilson/Getty Images