Veterans Day in the U.S. honors all those who've done military service. In other countries, the day is set aside to remember the Armistice that ended World War One. The World's Katy Clark has a global wrap-up of Veterans Day celebrations.
What happens when Peace Corps volunteers fall in love, either with each other or with citizens of the country hosting them? Nina Porzucki, a Peace Corps alum, reports from the frontlines of love in the developing world.
Several scientific groups are tracking the global spread of infectious diseases by monitoring Twitter, web searches, and other content online. The World's Rhitu Chatterjee looks at the promise and challenges of disease surveillance via the internet.