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The Truffaut borrowings are explicit in Noah Baumbach's Frances Ha, while Richard Linklater's Before Midnight takes its cues from Eric Rohmer's gentle but expansive talkfests. In both films, conversation is a centerpiece as characters navigate relationships.

North Carolina State University biologist Rob Dunn and colleagues surveyed people's pillow cases, refrigerators, toilet seats, TV screens and other household spots, to learn about the microbes that dwell in our homes. Among the findings, reported in the journal PLoS One, homes with dogs had more diverse bacterial communities, and higher numbers of "dog-associated" bacteria.

Smartphones, tablets and computers could help seniors stay connected to their communities and families. But a hefty price tag, steep learning curves, and designs meant for younger eyes and hands could keep some older adults from logging on. Guests discuss the best ways for seniors to tackle new technology, and how devices can be adapted to accommodate older users.

A series of tornadoes struck the central United States this week, including a powerful storm in Oklahoma that killed at least 24 people. Marshall Shepherd, the president of the American Meteorological Society, describes the ingredients of major tornadoes, and how they are predicted.

The plan, first announced last year, would break up the company's publishing and entertainment arms, and satisfy investors who are put off by the slow growth of its newspapers.

Hurricane Sandy devastated the state's coast last fall. But along 80 percent of New Jersey's shore this summer, "you won't notice any difference," says Gov. Chris Christie. He wants tourists to know that.

Treatments with drugs and implanted devices have made it much less likely that people with heart failure will die suddenly. But this chronic disease is still a common killer, researchers say.

In parts of the southeastern US, aggressive fire ants have been driven out by an even more recent arrival, the tawny crazy ant. Edward LeBrun, a researcher at the University of Texas at Austin, describes the newcomers and how one invasive species can out-invade another.

Citi Bike, the country's largest urban bike-sharing system, will soon be rolling in New York City after almost a year of delays. The idea has worked elsewhere, including Paris, Washington, D.C., and Montreal. But critics wonder if it's safe to add tens of thousands of new cyclists to the crowded streets of New York.

Melissa Block talks to Jeff Semple of the CBC about the video that appears to show Toronto Mayor Rob Ford smoking crack cocaine.