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.
Lately I've been re-watching vintage Truffaut movies, and I've been struck by the resurgent influence on American independent films of the French New Wave of the late '50s and '60s.
The Truffaut borrowings are fairly explicit in Noah Baumbach's Frances Ha, while Richard Linklater's Before Midnight takes its cues from Eric Rohmer's gentle but expansive talkfests. That's not a criticism: With mainstream movies seeming ever more machine-tooled nowadays, the impulse to reach back to an age of free-form filmmaking feels especially liberating.
This is SCIENCE FRIDAY. I'm Flora Lichtman, filling in for Ira Flatow today. If you could count up all the bacteria in your house, how many different species do you think you'd find - 50, a couple hundred? How about thousands, with an S at the end? My next guest had volunteers swab surfaces in their home - pillowcase, the TV screen, the toilet seat - to see what might be living there. And in each of the 40 households, the same spots were swabbed.
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.