Oh, The Bacteria: A colorized electron micrograph image from the Centers for Disease Control and Prevention shows a large grouping of Gram-negative Legionella pneumophila bacteria. There are quadrillions of bacteria in the world, far surpassing humanity's 7 billion.
The revelation this week that the Earth now holds 7 billion people, according to the U.N.'s population division, prompted a question: Who else is in the 7 Billion Club? To find out which other animals had reached that plateau, we asked wildlife experts — and they patiently explained why our innocent question was nearly impossible to answer.
German Chancellor Angela Merkel talks to French President Nicolas Sarkozy on the eve of the G-20 summit in Cannes, France, on Wednesday. The European economic crisis is taking center stage at the summit.
The setting for this year's G-20 summit meeting is the Riviera Convention Center that hosts the Cannes Film Festival. President Obama will be walking the red carpet, but it's the European leaders who are stars of this show.
The Europeans are facing pressure to erect a financial "firewall" that will prevent the debt problems now plaguing Greece from spreading to the rest of the Continent and beyond.
Harvard Business School's Jayanth Iyengar (far left), Jonas Peter Akins and Genevieve Sheenan held their own, but eventually lost to IBM's Watson in a game of Jeopardy at a conference on jobs and technology.
An automated robot arm picks up a bottle of prescription pills in the Medco pharmacy plant in Willingboro, N.J. Medco's state-of-the-art automated pharmacy can dispense up to 1 million prescriptions a week.
The U.S. economy hit an important milestone last week: Gross domestic product, the sum of all goods and services produced in the country, returned to pre-recession levels. But the gains were made with millions fewer workers. Part of the reason is technology, as computers and machines continue to replace humans.
We used to think about machines taking over mundane jobs, like twisting a screw into a toaster on an assembly line over and over again. But more recently, technology is eliminating higher-skill jobs.
Italian Prime Minister Silvio Berlusconi made a number of promises to fellow leaders of the eurozone countries at a summit meeting in October. Now Italy's economy is starting to become a growing concern for European Union leaders and financial markets.
STEVE INSKEEP, host: It's MORNING EDITION from NPR News. I'm Steve Inskeep.
RENEE MONTAGNE: And I'm Renee Montagne. To understand the European debt crisis, it helps to keep track of both the short-term and the long-term. In the short-term, Europeans have agreed on a bailout deal that among other things would cut the debts of Greece. It's being held up by the Greek prime minister's plan to hold a referendum on austerity measures. Europeans have told Greece it's got to decide soon if it wants to be part of the eurozone or not.