Frank Drake says SETI gets lots of false alarms and they’re all caused by signals that originate on earth, and that the situation will only get worse. But he’s still optimistic.
Intelligent. Optimistic. Curious.
Audio
Dan Janzen is one of the world’s leading tropical biologists. He’s discovered some 9,000 species of caterpillars in Costa Rica.
Acrassicauda means Black Scorpion and is the name of an Iraqi heavy metal band.
Megabyte, terabyte, gigabyte... web-watcher David Siegel says the web's just too data heavy. The answer is to stop duplicating and make all that data - particularly our personal data - more meaningful.
Dave Perry is the game developer who worked with the Wachowski brothers to create the videogame for “The Matrix Reloaded.”
Philosopher Daniel Dennett tells Steve Paulson why he finds ignorance of evolutionary biology so appalling.
Sci-fi writer Eileen Gunn bookmarks Nisi Shawl's "Filter House."
Pulitzer Prize-winning journalist Pir Zubair Shah risked his life to report from Waziristan -- a Taliban stronghold in northwest Pakistan -- where he was detained by both the Taliban and government forces. He spoke to Jim Fleming about the dangers of reporting from that region of Pakistan.
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