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98%VideoOct 2014

Glenn Greenwald: Why privacy matters

(20:42) If you have nothing to hide, then what's the problem? Extremely powerful TEDtalk by Glenn Greenwald, who was one of the first reporters to see the files leaked by Edward Snowden.

98%VideoNov 2013

Mikko Hypponen: How the NSA betrayed the world's trust

(19:19) George Orwell was optimistic. Computer security expert Mikko Hypponen summarises Edward Snowden's NSA revelations.


97%VideoDec 2011

Luis von Ahn - Massive-scale online collaboration

(16:40) Who'd have thought that with some brilliant lateral thinking, CAPTCHAs (the annoying security test that verifies you're human) can be simultaneously used to benefit humanity.

96%VideoSep 2014

Zak Ebrahim, the son of a terrorist

(9:13) Like father, like son? Zak Ebrahim was seven years old when his father helped plan the 1993 World Trade Center bombing.


96%VideoOct 2008

David Gallo - Underwater wonders

(6:00) Exploring the weird and wonderful creatures of the sea.


96%VideoAug 2014

David Keith: Should we look at geoengineering the climate?

(16:04) Canadian environmental scientist David Keith proposes a cheap and immediately effective means to address climate change.


95%VideoMar 2011

Life lesson from a firefighter

Volunteer firefighter Mark Bezos recalls when through no fault of his own, he landed a task not quite up to his expectations. But it taught him a big lesson - don't wait to be a hero.

95%VideoOct 2011

Justin Hall-Tipping - Freeing energy from the grid

(12:46) The power plant of tomorrow is... no power plant. If we had exquisite control over the essence of energy, the electron, we could generate the energy we need from where we are.

95%VideoApr 2012

The eight billion dollar iPod

(5:12) American author and entrepreneur Rob Reid applies 'copyright math' to analyse the cost of music piracy to the entertainment industry, using actual numbers from entertainment industry lawyers and lobbyists.


95%VideoMay 2012

Nick Hanauer's banned TEDTalk supporting higher taxes for the rich

(5:50) American entrepreneur and venture capitalist Nick Hanauer argues that the idea that "higher taxes on the rich will result in less jobs" is simply wrong.