TED: Var är alla Aliens?
The universe is incredibly old, astoundingly vast and populated by trillions of planets — so where are all the aliens? Astronomer Stephen Webb has an explanation: we’re alone in the universe. In a mind-expanding talk, he spells out the remarkable barriers a planet would need to clear in order to host an extraterrestrial civilization — and makes a case for the beauty of our potential cosmic loneliness. ”The silence of the universe is shouting, ’We’re the creatures who got lucky,'” Webb says.
TED: Hemligheten till ett lyckligt liv – lärdomar från 8 decennier av forskning
The happiest and healthiest people are those who have warm connections with others, says psychiatrist Robert Waldinger, who leads the Harvard Study of Adult Development — one of the longest-running studies of adult life ever conducted. Exploring the crucial link between social bonds and quality of life, he shares wisdom and insights into how to identify and strengthen the relationships that impact your well-being most.
When it comes to the people in your inner circle, ”Turn toward the voices that make you feel more open and more inclusive,” he says. (This conversation, hosted by TED current affairs curator Whitney Pennington Rodgers, was part of an exclusive TED Membership event. Visit ted.com/membership to become a TED Member.)
TED: Hur dåliga data fångar människor i det amerikanska rättssystemet
Right now, hundreds of thousands of people are ”stuck” in the US criminal justice system. They’ve completed all of their requirements for release, but nobody knows it because the system is run on old databases that don’t talk to each other.
TED Fellow Clementine Jacoby describes how we can fix it — bringing thousands of people home, reducing costs and improving public safety along the way.
TED: Hur lär sig AI saker?
Today, artificial intelligence helps doctors diagnose patients, pilots fly commercial aircraft, and city planners predict traffic. These AIs are often self-taught, working off a simple set of instructions to create a unique array of rules and strategies. So how exactly does a machine learn? Briana Brownell digs into the three basic ways machines investigate, negotiate, and communicate.
[Directed by Champ Panupong Techawongthawon, narrated by Safia Elhillo, music by Ambrose Yu]. Strobe effects warning: Please note that this animation features flashing lights and colors from 1:52 to 1:56
TED: Internets tillgänglighetsproblem – och hur du åtgärdar det
The internet provides access to knowledge for billions across the world, but how accessible is it really? Website accessibility advocate Clive Loseby sheds light on why many parts of the web are closed off to those with disabilities — and lays out some steps to make being online better for everyone.
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