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Ancient Rockies fish fossils reveal origin of jaws. The next time you open wide to bite into a triple-decker sandwich, you'll be able to trace the origin of that ability back 505 million years — to a minnow-sized fish that once lived in a sea in what is now the Canadian Rockies.

Ancient Rockies fish fossils reveal origin of jaws

Paleontologists have discovered fossils of an ancient fish named Metaspriggina that fill a missing link in the evolution of vertebrates and reveal where a key feature of vertebrates – our jaws – came from. Great miscalculations: The French railway error and 10 others. 22 May 2014Last updated at 06:11 ET The discovery by the French state-owned railway company SNCF that 2,000 new trains are too wide for many station platforms is embarrassing, but far from the first time a small mis-measurement or miscalculation has had serious repercussions.

Great miscalculations: The French railway error and 10 others

The French fiasco has been blamed by SNCF on the national rail operator RFF. But sometimes there is no-one else to share responsibility. Here are 10 examples where a little error has proved very expensive, or even fatal. 1. Is it legal to clone humans? Our picks of the week from around the web, including the end of food as we know it, the quest for immortality, and the legal realities of TV show Orphan Black.

Is it legal to clone humans?

Steven Pinker’s history of thought Colleen Walsh | Harvard Gazette | 6 May 2014 An interesting and often delightful interview with the scientist Steven Pinker. On the blossoming of psychology: “Cognitive science, which connects psychology to linguistics, theoretical computer science, and philosophy of mind, has helped explain intelligence in terms of information, computation, and feedback.

This crosstalk has made psychology more intellectually satisfying. It’s no longer just one damn phenomenon after another.” Darwin’s unexploded bomb Ed West | Spectator | 6 May 2014 Human evolution has been “recent, copious, and regional”, with groups diverging strongly from one another in the past 50,000 years, and especially in the past 10,000 years. Nereus deep sea sub 'implodes' 10km-down.

12 May 2014Last updated at 06:16 ET By Jonathan Amos Science correspondent, BBC News At the time of its loss, Nereus was investigating the Kermadec Trench One of the world's most capable deep-sea research subs has been lost.

Nereus deep sea sub 'implodes' 10km-down

The robotic vehicle Nereus went missing while exploring one of the ocean's deepest spots: the Kermadec Trench, which lies north east of New Zealand. Surface debris was found, suggesting the vessel suffered a catastrophic implosion as a result of the immense pressures where it was operating some 10km (6.2 miles) down. Nereus was a flagship ocean explorer for the US science community.

"Nereus helped us explore places we've never seen before and ask questions we never thought to ask," said Timothy Shank, from the Woods Hole Oceanographic Institution (WHOI), which managed the sub's activities. The $8m (£4.7m) robot was built in 2008 and could operate in an autonomous mode or remotely controlled via a tether to a support ship to explore the Earth's deepest oceanic trenches.

Flight MH370 search crowdsourced - The National - CBC Player. The web turns 25 - Technology - CBC Player. Deep Earth has oceans' worth of water, $10 diamond reveals - Technology & Science. A dirty, $10 diamond with a prize inside has helped reveal that there are vast quantities of water stored deep inside the Earth.

Deep Earth has oceans' worth of water, $10 diamond reveals - Technology & Science

The diamond formed in the "transition zone" around 410 to 660 kilometres below our planet's surface. Analysis of a mineral grain trapped inside it suggests that it came from surroundings that were about one per cent water, report researchers led by University of Alberta geochemist Graham Pearson. They published their findings online in the journal Nature today. If the sample is representative of that part of the deep Earth, the amount of water there could be "about the same as the mass of all the world’s oceans combined," wrote Hans Keppler, a geophysicist at the University of Bayreuth in Germany, in an analysis article.

That, in turn, changes our understanding of the way water cycles through our planet, and has implications for the way tectonic plates and volcanoes behave, Pearson notes. Meteorite mineral from Earth. Greenhouse gas levels hit new record high - Technology & Science. Atmospheric volumes of greenhouse gases blamed for climate change hit a new record in 2012, the World Meteorological Organisation (WMO) said on Wednesday.

Greenhouse gas levels hit new record high - Technology & Science

"For all these major greenhouse gases the concentrations are reaching once again record levels," WMO Secretary-General Michel Jarraud told a news conference in Geneva at which he presented the U.N. climate agency's annual Greenhouse Gas Bulletin . 'This year is worse than last year, 2011. 2011 was worse than 2010. India Mars launch - News - CBC Player. Scientists decipher dog-tail wags. 31 October 2013Last updated at 13:24 ET By Rebecca Morelle Science reporter, BBC World Service According to the scientists, a dog's tail wag can reveal its mood Scientists have shed more light on how the movements of a dog's tail are linked to its mood.

Scientists decipher dog-tail wags

Tiny 'LEGO brick' -style studs make solar panels a quarter more efficient. Rows of aluminium studs help solar panels extract more energy from sunlight than those with flat surfaces.

Tiny 'LEGO brick' -style studs make solar panels a quarter more efficient

Most solar cells used in homes and industry are made using thick layers of material to absorb sunlight, but have been limited in the past by relatively high costs. Many new, lower cost designs are limited as their layer of light-absorbing material is too thin to extract enough energy. In new research, scientists have demonstrated that the efficiency of all solar panel designs could be improved by up to 22 per cent by covering their surface with aluminium studs that bend and trap light inside the absorbing layer. Body heat-powered flashlight wins - CBC News Vancouver at 6 - CBC Player. Science & Environment - Is time travel possible? How A Car Engine Works (animated infographic) Wave power generator bags Dyson award. 12 September 2013Last updated at 17:02 ET By Mark Ward Technology correspondent, BBC News A scale model of the wave power generator has been tested in a large water tank A wave power generator that can harvest energy no matter which way the sea is running has won the UK round of James Dyson's engineering award.

Wave power generator bags Dyson award

The Renewable Wave Power generator seeks to overcome the limitations of some current wave power technologies. These work best when struck by waves travelling in one direction and are less efficient in more turbulent seas. The generator uses loosely coupled pistons to reap power from tidal waters that flow unpredictably. Digital Indians: Ben Gomes. 9 September 2013Last updated at 23:09 ET By Soutik Biswas BBC News, Mountain View, California Ben Gomes' first love was chemistry.

Digital Indians: Ben Gomes

(Illustration: Sumit Kumar) What do you do if you get more than three billion queries a day? If you are Ben Gomes, Google's Tanzania-born, India-bred, US-educated vice-president of search, you are responsible for helping to answer all of them - in the shortest time possible, on all devices: desktops, tablets, phones. And now, in the spoken word too. 'Walkie-Talkie' skyscraper melts Jaguar car parts. 2 September 2013Last updated at 10:49 ET The BBC's Andrew Verity surveys the damage caused by the skyscraper A new London skyscraper dubbed the "Walkie-Talkie" has been blamed for reflecting light which melted parts of a car parked on a nearby street.

Martin Lindsay parked his Jaguar on Eastcheap, in the City of London, on Thursday afternoon. 'Molecular basis' for jet lag found. 29 August 2013Last updated at 21:49 ET By James Gallagher Health and science reporter, BBC News Scientists believe they have figured out why it takes us so long to adapt when we travel to new time zones. Researchers at Oxford University say they have found the "molecular brakes" that prevent light resetting the body clock when we fly - causing jet lag.

Experiments, reported in the journal Cell, showed "uncoupling" these brakes in mice allowed them to rapidly adapt. Researchers hope the discovery will help find new drugs for jet lag and mental health treatments. The body clock keeps us in tune with the pattern of day and night. Light acts like a reset button to keep the clock to time, but when we fly around the world it takes time for our body clocks to adjust. Master clock The research team, funded by The Wellcome Trust, was trying to figure out why people do not instantly adapt.

They were looking for sections of DNA that changed their activity levels in response to light. University of St Andrews scientists create 'fastest man-made spinning object' 28 August 2013Last updated at 11:27 ET The red squiggles indicate the polarisation of the light beam, which changes as it goes through the purple sphere A team of researchers claims to have created the world's fastest spinning man-made object. They were able to levitate and spin a microscopic sphere at speeds of up to 600 million revolutions per minute. This spin speed is half a million times faster than a domestic washing machine and more than a thousand times faster than a dental drill. Evidence for new periodic table element boosted. 27 August 2013Last updated at 10:26 ET The new element has not yet been confirmed by the official body for chemistry and physics Scientists have presented new evidence for the existence of an unconfirmed element with atomic number 115.

The element is highly radioactive and exists for less than a second before decaying into lighter atoms. Tomorrow's cities: How the Venus Project is redesigning the future. 25 August 2013Last updated at 19:34 ET Is it possible to create a radically different society? One where material possessions are unnecessary, where buildings are created in factories, where mundane jobs are automated? Would you want to live in a city where the main aim of daily life is to improve personal knowledge, enjoy hobbies, or solve problems that could be common to all people in order to improve the standard of living for everyone? Some may think it is idealistic, but 97-year old architect Jacque Fresco is convinced his vision of the future is far better than how we live today.

Continue reading the main story To see the enhanced content on this page, you need to have JavaScript enabled and Adobe Flash installed. Science & Environment - How we can bring extinct animals back to life. Hyperloop_alpha-20130812.pdf (application/pdf Object) Yo Sushi's "flying waiter" serves your meal via quadcopter. UK-based restaurant Yo Sushi outfitted a quadcopter with a food tray and is having waiters fly it to tables using an iPad Image Gallery (3 images) Delivering food with an airborne drone has developed into an odd trend in recent months, and now a sushi place in London is dispatching a UAV that doesn't even need to leave the restaurant. To promote its new rice burger, Yo Sushi outfitted a quadcopter with a food tray and is having waiters fly it to tables using an iPad. Alfredo Moser: Bottle light inventor proud to be poor.

Elon Musk unveils 'Hyperloop' idea. Giant gas platform sunk: Time-lapse footage. The South Korean buses powered by an electric road. Uld we grow our own meat at home? Newsbeat - Britain's biggest 'fatberg' removed from London sewer. World's first lab-grown burger is eaten in London. Science & Environment - Will we ever … have reliable nuclear fusion power? For decades scientists have tried to generate an untapped source of energy by creating the conditions inside stars.

Scientists can implant false memories into mice. 25 July 2013Last updated at 15:28 ET By Melissa Hogenboom Science reporter, BBC News. Theremin world record set in Japan. US unmanned drone jet makes first carrier landing. Mputational photography: the snap is only the start. Mputational photography: the snap is only the start. How Napoleon's semaphore telegraph changed the world. Secret life of the cat: What do our feline companions get up to? TEDGlobal: Visions of the future of flying. Before dinosaurs' era, volcanic eruptions triggered mass extinction. Google acquires kite-power generator. Clone zone: Bringing extinct animals back from the dead. Study backs 'hobbit' island dwarfism theory. Atoms star in world's smallest movie from IBM. Quantum biology: Do weird physics effects abound in nature? Lake Ellsworth: Mission to the Antarctic's lost world.

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Wind power deadline sees US firms rush to build turbines.