Roman Empire reshaped Iberian ancestry more than later migrations   •   Vegan-fed cats show lower obesity odds in survey   •   CF Foundation issues new reproductive health guidance   •   Flawed Hospital Sinks May Fuel Superbug Spread   •   Surgery reverses immune damage from obesity   •   Roman Empire reshaped Iberian ancestry more than later migrations   •   Vegan-fed cats show lower obesity odds in survey   •   CF Foundation issues new reproductive health guidance   •   Flawed Hospital Sinks May Fuel Superbug Spread   •   Surgery reverses immune damage from obesity   •