GravityLight: the gravity-powered lamp aiming to light the developing world for less

After a successful Indiegogo campaign, the GravityLight is now being mass produced

On climate, we need a global carbon market with its own ‘federal reserve’

Immediate action is more than ever dependent on channeling the private sector

Enter-prize: Host Sue Perkins, left, Independent on Sunday editor Lisa Markwell, right, and Nigel Kershaw, winner of the category sponsored by The IoS

Social Enterprise UK Awards: Prizes for businesses that 'give back'

Awards, sponsored by The IoS, were presented to winners last week

Immigration stats are bad news for the Government, but worse news for Britain

Reducing the number of foreign students runs directly against the UK's best interests

A visa is crucial if you're planning on working abroad - and it can also be necessary even if you're just popping in for a few days

We should be encouraging students to enter Britain, not tightening our visa requirements

Strict visa rules are turning students away

A US Predator drone flies over Kandahar Air Field, southern Afghanistan

Look to the skies: How the drone revolution could be coming to the US

Watch out, within five years 7,500 drones may be plying American airspace

Bitcoin is an experimental digital currency that has gained popularity worldwide

Bitcoin value surpasses $1,000 for first time

The price at which a single unit of the digital currency trades has risen dramatically in recent months

Guardian crossword editor John Graham dies of cancer aged 92 – after announcing illness in puzzle clues

Graham was know to his readers as Araucaria Latin for Monkey Puzzle tree

One billion 4G connections expected for 2017

America is currently the largest user of 4G data in terms of sheer numbers, although South Korea had the highest proportion of population signed up

Protesters in Edinburgh showed what they thought of the Royal Bank of Scotland during the credit crunch in 2008

Derek Sach and RBS: Last of Fred Goodwin’s trusty lieutenants comes under fire over 'restructuring' tactics

Derek Sach placed at heart of the restructuring at RBS that drove viable businesses to the wall

David and Victoria Beckham buy west London home for £40m

The former footballer and Spice Girl are expected to invest £5m on doing the house up to their own specifications

Apple confirms $360m purchase of motion tech specialists PrimeSense

The Israeli based PrimeSense produced the technology for the original Kinect, fuelling rumours that Apple will be introduced gesture-controlled devices

IT firms’ total soars as UK clicks as a tech hub

Britain’s app economy and London’s booming Silicon Roundabout have led to a surge of 37,000 in the number of UK IT companies in the past two years.

Old ties: Ed Miliband talks to former group Co-op chairman Len Wardle in Downing Street in 2010

Exclusive: Ed Miliband says David Cameron's Tories in the gutter as 2015 election strategist Lynton Crosby pushes party towards the politics of division

Labour fears dirtiest Conservative campaign in 20 years, as Attorney General withdraws attack on Pakistani community

Paperback review: British Gothic Cinema, By Barry Forshaw

Fans of Hammer will relish its defence in this erudite survey, particularly against the insistence of Peter Cushing and Christopher Lee that they had merely made “colourful fantasies”. In Forshaw’s view, Curse of Frankenstein is “deeply visceral”, while Dracula is “subversive… perfectly constructed”.

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Prices correct as of 17 September 2014
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'Normcore': Blending in is the new standing out

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