A day at the shore can leave beachgoers with more than a sunburn — a gulp of seawater can expose swimmers to disease-causing microbes like norovirus, salmonella, and adenovirus. Marine scientist Rachel Noble and environmental medicine researcher Samuel Dorevitch discuss the risk, and what's being done to limit swimmers' exposure.
As New Yorkers braced themselves for Hurricane Sandy, coastal geologist Cheryl Hapke was out surveying Fire Island, a barrier island off the Long Island coast. Days later, Hapke was back to document the hurricane's effects and found a breach cutting the island in two. Now locals and scientists are debating whether the inlet should be filled in or left as nature intended.
"Someone described my office as an eight-year-old's daydream," says astronomer Jill Tarter, who has been collecting E.T.-themed office ornaments for 30 years. Tarter was the SETI (Search for Extraterrestrial Intelligence) Institute's first employee, and the inspiration for the character in Carl Sagan's Contact.
A group of British academic researchers has announced plans to band together in a search for extraterrestrial intelligence. Alan Penney, the coordinator of the newly-formed UK SETI Research Network, describes the group's strategy for looking for signals from the stars.
With the NSA conducting surveillance on our data and Google scanning our email, how can we protect our personal information? Jon Xavier, digital producer at Silicon Valley Business Journal, discusses the services that you can use to make your information more secure and private.
Originally published on Tue December 17, 2013 9:53 am
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What motivates dozens, thousands, even millions of people to come together on the Internet and commit their time to a project for free? In this hour, TED speakers unravel ideas behind the mystery of mass collaborations that build a better world.
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Social media guru Clay Shirky looks at "cognitive surplus" — the shared, online work we do with our spare brain cycles. While we're busy contributing to the web in our small ways, we're building a better, more cooperative world.
Founder of Wikipedia Jimmy Wales recalls how he assembled "a ragtag band of volunteers," gave them tools for collaborating to create a self-organizing, self-correcting, never-finished online encyclopedia.
Computer programmer Luis von Ahn wondered how else to use small contributions done by millions on the Internet for greater good. He put CAPTCHAs, those online puzzles to verify you're not a robot, to work by digitizing books and teaching foreign languages.
The area of ocean set aside as a nature preserve could double or triple in the coming days, depending on the outcome of a meeting in Germany. Representatives from 24 countries and the European Union are considering setting aside large portions of ocean around Antarctica as a protected area. And the deal may hinge on preserving some fishing rights.
There are two proposals on the table: One would set aside huge parts of the Southern Ocean around East Antarctica; the other would focus on the Ross Sea, south of New Zealand.