More time and money needed to wipe out polio, global group says#Overseas Development Aid#Asia#Pacific
NASA launches spacecraft to gauge if Jupiter's moon Europa can host life#Living#Lifestyle#North America
Mussels invade Swiss lakes, coating fishing nets and threatening wildlife#Environment#Europe#Pictures
Off Argentina's Patagonian coast, whales and their calves dive deep for food#Human-Led Breaking#South America#Central America
Nobel prize for medicine goes to U.S. duo who discovered microRNA#Drug & Device Development#Europe#Health