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Arctic sea ice could completely VANISH by 2035

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arctic sea ice could completely vanish by 2035

Arctic sea ice could be non-existent by 2035, a damning study warns. 

Academics utilised a climate modelling tool created by the Met Office to find out how the Arctic responded during a period of warming 127,000 years ago.

These historical results were then use to create predictions of the future and reveal it is likely there will be no sea ice in the Arctic in 15 years’ time. 

The culprit is strong springtime sunshine which creates pools of water known as ‘melt ponds’ that soak up heat from the sun and then contribute to warming.  

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Arctic sea ice is rapidly in decline due to global warming and a study predicts it will be completely gone by 2035 (stock)

Arctic sea ice is rapidly in decline due to global warming and a study predicts it will be completely gone by 2035 (stock)

Arctic sea ice is rapidly in decline due to global warming and a study predicts it will be completely gone by 2035 (stock)

Arctic sea ice plays an essential role in the world’s ecosystems and its melting will not only contribute to surging sea levels but render many species homeless. 

Polar bears, for example, are utterly reliant on Arctic sea ice to live as they use the ice to stalk and hunt prey. 

A recent study found most polar bear populations are at risk of dying out by 2100 because of a loss of sea ice. 

This timeline is likely to be accelerated should the new prediction of 2035 prove accurate.  

Researchers from the University of Cambridge and the British Antarctic Survey worked with the Met Office on the latest study. 

The culprit fr the demise of sea ice is believed to be strong springtime sunshine which creates pools of water known as 'melt ponds' that soak up heat from the sun and then contribute to warming

The culprit fr the demise of sea ice is believed to be strong springtime sunshine which creates pools of water known as 'melt ponds' that soak up heat from the sun and then contribute to warming

The culprit fr the demise of sea ice is believed to be strong springtime sunshine which creates pools of water known as ‘melt ponds’ that soak up heat from the sun and then contribute to warming

They found that during the warm interglacial period around 127,000 years ago, intense springtime sunshine created pools of water as ice melted.  

These meltwater pools cause more ice to melt as they do not reflect as much sunlight as intact ice. 

Instead, more of the sun’s rays and energy are absorbed by the water, warming more ice, and contributing to a phenomenon known as Arctic amplification.  

This was deemed to be a major factor in the sea ice melt more than 100,000 years ago, and a similar preponderance of meltwater pools has been spotted today in satellite imagery. 

How ‘Arctic amplification’ causes severe polar warming  

Scientists have long expected that shrinking Arctic sea ice cover will lead to strong warming of the Arctic air. 

Sea ice helps to keep the Arctic atmosphere cold as its whiteness reflects much of the sun’s rays. 

It also physically insulates the land beneath it.  

With less sea ice more dark open water is exposed, which readily absorbs the Sun’s energy in summer, heating the ocean and leading to even more melt. 

With less sea ice there is also less insulation, so that heat from the ocean escapes to warm the atmosphere in the autumn and winter. 

This leads to a runaway train effect which results in soaring temperatures well above the global average.  

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September is the month where sea ice is always at its lowest level, following months of summer temperatures.  

Satellite records show that it is shrinking by about 13 per cent every decade, with around half of all Arctic sea ice disappearing since the 1980s. 

While almost all experts agree that Arctic sea ice will be gone by 2050, previous predictions have proved wildly inaccurate. 

Some estimates incorrectly claimed that Arctic sea ice would already have vanished. 

Joint lead author Dr Maria Vittoria Guarino, Earth System Modeller at British Antarctic Survey (BAS), says: ‘High temperatures in the Arctic have puzzled scientists for decades.

‘Unravelling this mystery was technically and scientifically challenging. 

‘For the first time, we can begin to see how the Arctic became sea ice-free during the last interglacial. 

‘The advances made in climate modelling means that we can create a more accurate simulation of the Earth’s past climate, which, in turn gives us greater confidence in model predictions for the future.’

Dr Louise Sime, the group head of the Palaeoclimate group and joint lead author at BAS, says: ‘We know the Arctic is undergoing significant changes as our planet warms. 

‘By understanding what happened during Earth’s last warm period we are in a better position to understand what will happen in the future. 

‘The prospect of loss of sea-ice by 2035 should really be focussing all our minds on achieving a low-carbon world as soon as humanly feasible.’

The research has been published in the journal Nature Climate Change.  

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Twitter goes down for more than an hour leaving thousands of users unable to access the platform

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twitter goes down for more than an hour leaving thousands of users unable to access the platform

More than 50,000 Twitter users were unable to access the website and app versions of the social media platform Thursday morning due to a worldwide outage.

Down Detector showed the outage started around 9:30am ET and was plaguing parts of the US, Europe and Asia.

Many users were met with an ‘error message’ when logging in, along with a blank news feed that only reads ‘try again’ and disabled features – all of which hindered their ability to share tweets. 

The peak of the outage hit around 10am ET, but much of the service was restored around 10:45am ET – some Twitter users may still be experiencing issues. 

More than 50,000 Twitter users were unable to access the website and app versions of the social media platform Thursday morning due to a worldwide outage. Down Detector showed the outage started around 9:30am ET and was plaguing parts of the US, Europe and Asia

More than 50,000 Twitter users were unable to access the website and app versions of the social media platform Thursday morning due to a worldwide outage. Down Detector showed the outage started around 9:30am ET and was plaguing parts of the US, Europe and Asia

More than 50,000 Twitter users were unable to access the website and app versions of the social media platform Thursday morning due to a worldwide outage. Down Detector showed the outage started around 9:30am ET and was plaguing parts of the US, Europe and Asia 

Typically when one social media site experiences an outage, users flock to Twitter to share their frustrations or ask if anyone else is having problems.

But when Twitter went down, the world may be in a frenzy.

DailyMail.com has reached out to Twitter for comment and has yet to receive a response. 

Down Detector, a platform that monitors website and online service outages, is one of the only places the public can go to check on the outage when Twitter is down. 

The outage appeared around 9:30am and is located in the US, the UK and Japan - other countries in Europe, Asia and South American are also reporting issues

The outage appeared around 9:30am and is located in the US, the UK and Japan - other countries in Europe, Asia and South American are also reporting issues

The outage appeared around 9:30am and is located in the US, the UK and Japan – other countries in Europe, Asia and South American are also reporting issues

Many users were met with an 'error message' when logging in, along with a blank news feed that only reads 'try again' and disabled features - all of which hindered their ability to share tweets

Many users were met with an 'error message' when logging in, along with a blank news feed that only reads 'try again' and disabled features - all of which hindered their ability to share tweets

Many users were met with an ‘error message’ when logging in, along with a blank news feed that only reads ‘try again’ and disabled features – all of which hindered their ability to share tweets 

The majority of the outage was plaguing the website, but users reported issues with the iOS and Android apps. 

Down Detector’s outage map showed a number of major cities in the US as red, including Seattle, San Francisco, Washington  DC and New York City.

Twitter also went down in Japan, parts of India and Indonesia, along with countries in Europe.

Users shared their frustrations on Down Detector about Twitter going down so early in the day.

Users have shared their frustrations on Down Detector about Twitter going down so early in the day. One user joke that without the site, all they can do is look at the wall

Users have shared their frustrations on Down Detector about Twitter going down so early in the day. One user joke that without the site, all they can do is look at the wall

Users have shared their frustrations on Down Detector about Twitter going down so early in the day. One user joke that without the site, all they can do is look at the wall

Another took this time to take a dig at liberals: 'I hope they fix it by 11:30AM when all the white liberals start rolling out of bed... they have some very important hashtags to tweet out today to save all the helpless minorities they are trying to rescue'

Another took this time to take a dig at liberals: 'I hope they fix it by 11:30AM when all the white liberals start rolling out of bed... they have some very important hashtags to tweet out today to save all the helpless minorities they are trying to rescue'

Another took this time to take a dig at liberals: ‘I hope they fix it by 11:30AM when all the white liberals start rolling out of bed… they have some very important hashtags to tweet out today to save all the helpless minorities they are trying to rescue’

One user joked that without the site, all they can do is look at the wall.

Another took this time to take a dig at liberals: ‘I hope they fix it by 11:30AM when all the white liberals start rolling out of bed… they have some very important hashtags to tweet out today to save all the helpless minorities they are trying to rescue.’

The peak of the outage was around 10am ET, but service was coming back shortly after, with reports decreasing about 45 minutes later.

This post first appeared on dailymail.co.uk

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Twitter is DOWN! Thousands of users across the world are unable to access the social media platform

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twitter is down thousands of users across the world are unable to access the social media platform

 If you are having issues with Twitter, you are not the only one – more than 40,000 users across the world are experiencing problems with the social media platform.

The social media site is experiencing an outage that seems to be hitting the website and apps on both iOS and Android.

The outage appeared around 9:30am and is located in the US, the UK and Japan – other countries in Europe, Asia and South American are also reporting issues.

Many users have been met with an ‘error message’ when logging in, along with a blank news feed. 

If you are having issues with Twitter, you are not the only one. The social media site is experiencing an outage that seems to be hitting the website and apps on both iOS and Android

If you are having issues with Twitter, you are not the only one. The social media site is experiencing an outage that seems to be hitting the website and apps on both iOS and Android

Typically when one social media site experiences an outage, users flock to Twitter to share their frustrations or ask if anyone else is having problems.

But with Twitter down, the world may be in a frenzy.

Down Detector, a platform that monitors website and online service outages, is one of the only places the public can go to check on the outage.

The outage report shows more than 48,000 people have reported issues with Twitter, which started flowing in around 9:30am ET.

The outage appeared around 9:30am and is located in the US, the UK and Japan - other countries in Europe, Asia and South American are also reporting issues. Many users have been met with an 'error message' when logging in, along with a blank news feed

The outage appeared around 9:30am and is located in the US, the UK and Japan – other countries in Europe, Asia and South American are also reporting issues. Many users have been met with an ‘error message’ when logging in, along with a blank news feed

Approximately 49 percent are experiencing issues with the website, 35 percent noted problems with Twitter on an iOS devices and 15 percent on the Android app.

Down Detector’s outage map shows a number of major cities in the US as red, including Seattle, San Francisco, Washington  DC and New York City.

Twitter has also gone down in Japan, parts of India and Indonesia.

This post first appeared on dailymail.co.uk

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Nuclear fusion reactor could be producing electricity within a decade 

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nuclear fusion reactor could be producing electricity within a decade

A tennis court-sized nuclear fusion reactor being developed in the US could be producing electricity within a decade, backers claim.  

The SPARC nuclear fusion reactor, a joint project involving Massachusetts Institute of Technology, is expected to begin construction on June 21 next year and take three or four years until completion.

It is hoped that SPARC will demonstrate energy gain from fusion for the first time in history by 2025, and be producing fusion energy to generate electricity to power nearby cities within 10 years. 

Nuclear fusion power works by colliding heavy hydrogen atoms to form helium, releasing vast amounts of energy, mimicking the process that occurs naturally in the centre of stars like our Sun. 

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SPARC, which is on track to begin construction in 2021 and demonstrate net energy gain from fusion for the first time in history by 2025. Pictured, artists' impression of the reactor with a human for scale

SPARC, which is on track to begin construction in 2021 and demonstrate net energy gain from fusion for the first time in history by 2025. Pictured, artists’ impression of the reactor with a human for scale

Fusion could eventually combat climate change by replacing energy sources that emit greenhouse gases, such as coal and gas. 

Fusion also provides cheap, clean and safe energy without radioactive waste, or the risk of meltdown. 

SPARC will pave the way for the first commercially viable fusion power plant, called ARC. 

MIT said limitations imposed by the Covid-19 pandemic have only slightly slowed progress on SPARC and researchers are back in the labs under new operating guidelines. 

‘The work is progressing smoothly and on track,’ said MIT, which is working with Cambridge, Massachusetts-based company Commonwealth Fusion Systems (CFS) on SPARC. 

A fusion power plant could provide clean, carbon-free energy with an essentially unlimited fuel supply. From the point of view of electrical power generation, the fusion device is just another heat source that could be used in a conventional thermal conversion cycle.

A fusion power plant could provide clean, carbon-free energy with an essentially unlimited fuel supply. From the point of view of electrical power generation, the fusion device is just another heat source that could be used in a conventional thermal conversion cycle. 

‘No unexpected impediments or surprises have shown up, and the remaining challenges appear to be manageable,’ it said in a statement.  

SPARC is set to be the first experimental device ever to achieve a ‘burning plasma’ – a self-sustaining fusion reaction in which different isotopes of the element hydrogen fuse together to form helium, without the need for any further input of energy. 

When deuterium and tritium nuclei – which can be found in hydrogen – fuse, they form a helium nucleus, a neutron and a lot of energy.

This is done by heating the fuel to temperatures in excess of 270,000,000°F (150,000,000°C) and forming a hot plasma – a gaseous soup of subatomic particles – held in place by magnets.

The strong magnetic fields are used to keep the plasma away from the reactor’s walls, so that it doesn’t cool down and lose its energy potential.

Fusion power works by colliding heavy hydrogen atoms to form helium - releasing vast amounts of energy in the process, as occurs naturally in the centre of stars

Fusion power works by colliding heavy hydrogen atoms to form helium – releasing vast amounts of energy in the process, as occurs naturally in the centre of stars

These fields are produced by superconducting coils surrounding the vessel and by an electrical current driven through the plasma.    

Information gathered from the behaviour of burning plasma is ‘crucial’ for developing the next step – a working prototype of a practical, power-generating power plant, the SPARC team said. 

Once this is up and running, key information can be gained that will help pave the way to commercial, power-producing fusion devices. 

Fuel running these devices – the hydrogen isotopes deuterium and tritium – can be made available in virtually limitless supplies. 

Work on the first stage of the SPARC project is the development of the superconducting magnets that would allow smaller fusion systems to be built. 

Fusion power plants are set to reduce greenhouse gas emissions from the power-generation sector, which is one of the major sources of these emissions globally.    

SPARC is designed to achieve what is called a Q factor – a key parameter denoting the efficiency of a fusion plasma – of at least two.

This essentially means that twice as much fusion energy is produced as the amount of energy pumped in to generate the reaction. 

Fusion joins two light elements (with a low atomic mass number), forming a heavier element, to generate energy. Pictured, artist's illustration (stock image)

Fusion joins two light elements (with a low atomic mass number), forming a heavier element, to generate energy. Pictured, artist’s illustration (stock image)

If realised, SPARC would be the first time a fusion plasma of any kind has produced more energy than it consumed. 

Computer calculations and simulation tools show SPARC could actually achieve a Q ratio of 10 or more, MIT claims.

A series of papers authored by 47 researchers from 12 institutions have been published in Journal of Plasma Physics summarising progress on SPARC. 

Together, the papers outline the theoretical and empirical physics basis for the new fusion system before it starts construction next year. 

‘The MIT group is pursuing a very compelling approach to fusion energy,’ said Chris Hegna, a professor of engineering physics at the University of Wisconsin at Madison, who was not connected to this work. 

‘They realised the emergence of high-temperature superconducting technology enables a high magnetic field approach to producing net energy gain from a magnetic confinement system. 

Pictured, one of two 800-tonne vacuum vessel assembly tools, as captured by the artist Luca Zanier, involved in the construction of the much larger ITER Tokamak reactor now being built in France

Pictured, one of two 800-tonne vacuum vessel assembly tools, as captured by the artist Luca Zanier, involved in the construction of the much larger ITER Tokamak reactor now being built in France

‘This work is a potential game-changer for the international fusion program​.’ 

The SPARC design would achieve fusion performance comparable to that expected in the much larger ITER Tokamak now being built in France. 

The Provence-based ITER project is expected to begin delivering power in 2035 – several years later than SPARC if all goes to plan for the US team. 

‘We’re really focused on how you can get to fusion power as quickly as possible,’ CFS CEO Bob Mumgaard told the New York Times.

SPARC would be far smaller than ITER – about the size of a tennis court, compared with a soccer field, Mumgaard said. 

High power in a small size is made possible by advances in superconducting magnets that allow for a much stronger magnetic field to confine the hot plasma, MIT said. 

DIFFERENCE BETWEEN NUCLEAR FUSION AND NUCLEAR FISSION 

 Both are nuclear processes, in that they involve nuclear forces to change the nucleus of atoms.

Fusion joins two light elements (with a low atomic mass number), forming a heavier element.

For fusion to occur, hydrogen atoms are placed under high heat and pressure until they fuse together.

Meanwhile, fission splits a heavy element (with a high atomic mass number) into fragments.

In both cases, energy is freed because the mass of the remaining nucleus is smaller than the mass of the reacting nuclei.

The reason why opposite processes release energy can be understood by examining the binding energy per nucleon curve. Both fusion and fission reactions shift the size of the reactant nuclei towards higher bounded nuclei.

Source: International Atomic Energy Agency  

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