Jessie Buckley narrates the extraordinary story of the first transatlantic communications cable. In 16 August 1858, a short message is telegraphed from County Kerry to Newfoundland, 3,000km away: ‘Europe and America are united by telegraph. Glory to God in the highest, on earth peace, good will towards men.’ The Morse code message is conducted along the new underwater transatlantic telegraph cable laid across the bed of the Atlantic Ocean. Sending the same message by ship would have taken at least ten days, but the transmission takes just hours and heralds the dawn of the modern communications age. The quest is driven by visionaries and pioneers. Among them are Cyrus Field, a wealthy businessman who, despite his immense success, ends his life in poverty; Samuel Morse, inventor of the telegraph and Morse code; Isambard Kingdom Brunel, the British engineer who pushes boundaries and budgets; and Belfast physicist Lord Kelvin, who calculates how to achieve what had hitherto been deemed impossible. Together, their ingenuity and relentless pursuit helps realise one of the great scientific accomplishments of their age for which Valentia, on Ireland’s remote western coast, is ground zero.
In the third programme of the series, Aleks gives the lowdown on how, for better and for worse, commerce has colonized the web - and reveals how web users are paying for what appear to be 'free' sites and services in hidden ways. Joined by some of the most influential business leaders of today's web, including Eric Schmidt (CEO of Google), Chad Hurley (CEO of YouTube), Bill Gates, Martha Lane Fox and Reed Hastings (CEO of Netflix), Aleks traces how business, with varying degrees of success, has attempted to make money on the web. She tells the inside story of the gold rush years of the dotcom bubble and reveals how retailers such as Amazon learned the lessons. She also charts how, out of the ashes, Google forged the business model that has come to dominate today's web, offering a plethora of highly attractive, overtly free web services, including search, maps and video, that are in fact funded through a sophisticated and highly lucrative advertising system which trades on what we users look for. Aleks explores how web advertising is evolving further to become more targeted and relevant to individual consumers. Recommendation engines, pioneered by retailers such as Amazon, are also breaking down the barriers between commerce and consumer by marketing future purchases to us based on our previous choices. On the surface, the web appears to have brought about a revolution in convenience. But, as companies start to build up databases on our online habits and preferences, Aleks questions what this may mean for our notions of privacy and personal space in the 21st century
Laurent Ballesta has yet again challenged himself to a new world record: spend 28 days at a depth of 100 meters to reveal the luxuriant and unknown depths of the Mediterranean. Because people have been travelling there for thousands of years, this sea is believed to be without secrets. And yet, far below its surface, lie vast unexplored territories, luxurious gardens worthy of the finest tropical coral reefs. These natural wonders are inaccessible to the traditional diver, in a twilight zone, between 60 and 120 m, where there’s less than 1% of sunlight. If diving at such depths is always a challenge, staying there is a fantasy, a utopia that becomes reality in 'The Deep Med'.
The nervous system is fundamentally electric. When we move our arm, it moves because a electric signal has been sent to the muscle that controls it. Now, because the brain is electric, we could also use electricity to record what the brain is doing or bypass it entirely, and control a body. That means that we could restore movement to people who are paralyzed, feel through an artificial hand as if it was our own, and even read people's minds. Michael Stevens explores how electricity can be used to move cockroaches, control other peoples' limbs and even read peoples' thoughts.
A look at the probes which explored our Solar System, laying the groundwork for a future spacecraft to search for life on a second Earth. That space craft must communicate, it must navigate, it must have power, it must have propulsion. We will have to give it all the intelligence necessary to make its own decisions. In 'The Explorers' the spacecraft Artemis initiates launch sequence and begins its 4.7 light year journey to Minerva B - an Earth-like exoplanet.
Is it humankind's greatest achievement? 12 billion miles away a tiny spaceship is leaving our Solar System and entering the void of deep space. It is the first human-made object ever to do so. Slowly dying within its heart is a plutonium generator that will beat for perhaps another decade before the lights on Voyager finally go out. But this little craft will travel on for millions of years, carrying a Golden Record bearing recordings and images of life on Earth. In all likelihood Voyager will outlive humanity and all our creations. It could be the only thing to mark our existence. Perhaps some day an alien will find it and wonder. The story of Voyager is an epic of human achievement, personal drama and almost miraculous success. Launched 16 days apart in Autumn 1977, the twin Voyager space probes have defied all the odds, survived countless near misses and almost 40 years later continue to beam revolutionary information across unimaginable distances.
The quest is driven by visionaries and pioneers. Among them are Cyrus Field, a wealthy businessman who, despite his immense success, ends his life in poverty; Samuel Morse, inventor of the telegraph and Morse code; Isambard Kingdom Brunel, the British engineer who pushes boundaries and budgets; and Belfast physicist Lord Kelvin, who calculates how to achieve what had hitherto been deemed impossible. Together, their ingenuity and relentless pursuit helps realise one of the great scientific accomplishments of their age for which Valentia, on Ireland’s remote western coast, is ground zero.