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Professor Jim Al-Khalili talks to leading scientists about their life and work, finding out what inspires and motivates them and asking what their discoveries might do for us in the future

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357 Folgen
  • Folge vom 16.01.2018
    Eben Upton on Raspberry Pi
    When Eben Upton was in his twenties, he wanted to get children thinking about how computers think, to boost the number of people applying to read computer science at university. He dreamt of putting a chip in every classroom. The result was Raspberry Pi, a tiny gadget, little bigger than a credit card, that can be hooked up to any keyboard and monitor, to create a programmable PC. And it's cheap. Raspberry Pi Zero, sticker price just �5, was given away free with a computer magazine in 2015. Eben tells Jim how it all began, in his loft with soldering irons and post it notes, and how, by ruthlessly pursuing a philanthropic goal he became CEO of a highly successful business enterprise. Producer: Anna Buckley.
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  • Folge vom 31.10.2017
    Adrian Thomas on the mechanics of flight
    As a young man Adrian Thomas took to the skies in order to better understand the mechanics of flight. He's a paragliding champion and a Professor of Zoology who specialises in the dynamics of insect flight. On a typical day, he can be found inside a wind tunnel that's been custom-made to study insects instead of jumbo jets. Using lines of smoke and high speed video cameras, he measures exactly how different insects flap their wings. When he's not writing academic papers, he's inventing clever machines based on his insights into how nature achieves certain results. His latest project is a drone that's inspired by a dragonfly. This nimble robot can accelerate rapidly in any direction and, having flexible wings rather than rotary blades, it glides when the battery dies rather than dropping dangerously to the ground. He's also working on a wheelchair modelled on a spider and a boat with a fin rather than a propeller. Producer: Anna Buckley.
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  • Folge vom 24.10.2017
    Ellen Stofan on being NASA chief scientist
    When Ellen Stofan was just four years old, she witnessed the worst rocket launch-pad disaster in NASA's history convinced that her father, (who was a rocket engineer) was on board. He wasn't. Nonetheless, for many years NASA was not her favourite place. In 2013, however, she became she became their chief scientist, a post she held for 4 years. Barak Obama dreamt of putting people on the red planet by 2032 and Ellen did everything she could to develop a realistic plan to make this happen. (A 2032 arrival is ambitious but NASA is considerably closer than it was before Ellen took charge of the science.) Her research career began studying radar data from a Soviet mission to Venus, trying to see beyond the thick toxic cloud that surrounds it. She wanted to understand how Venus evolved so very differently from its nearest neighbour, earth. She has also used radar data from satellites to study planet earth. And in 2008, was the lead author on a paper that revealed the extent of the lake on Saturn's moon, Titan. It contains hundreds of times more gas and liquid hydrocarbons than all the known oil and natural gas reserves on earth. Producer: Anna Buckley.
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  • Folge vom 17.10.2017
    Tim Birkhead on bird promiscuity
    Professor Tim Birkhead talks to Jim Al Khalili about his 40 years of research on promiscuity in birds, his love of Skomer Island and its guillemots, and the extraordinary musical talent of the male bullfinch.Tim Birkhead is an evolutionary biologist and ornithologist at the University of Sheffield. The primary focus of his research has been reproduction in birds. He pioneered the study of promiscuity or extra-pair mating in birds, and one of its evolutionary consequences - sperm competition. In the early 1970s Tim questioned and then exploded the assumption that female birds were always sexually monogamous - a zoological dogma originating with Charles Darwin. Tim first explored this in the guillemot colony on Skomer Island in Wales: a population of seabirds which he has studied continuously for more than 40 years in the cause of both evolutionary insights and conservation. Tim talks with passion about an ongoing funding crisis that hit this research programme recently and how the public response to it has been the most inspiring event in his career.A side branch of Tim's research includes the jaw-dropping musical mimicry of the male bullfinch. The programme includes a recording of a captive bird whistling a German folk tune with super-human skill.ADVISORY! There is a longer version of the conversation in the podcast of this edition. In this edit, Tim talks about the truly weird false penis of the male red-billed buffalo weaver: an extreme evolutionary product of sperm competition in this species and what amounts to an avian tickling stick. Tim also addresses the controversial topic of sperm competition in humans and the myth of 'kamikaze sperm'. Producer: Andrew Luck-Baker.
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