Why didn't the creator of the hashtag patent the concept?

The hashtag as a concept is not new. A hashtag is an index term – like when you look up a word in the back of a book to see where in the book the topic is covered.

Angelina Jolie and Sony Pictures co-chairman Amy Pascal at the Golden Globes in 2011

Sony Pictures' blockbuster hack leaves red faces and strained grins

The FBI still doesn’t know if North Korea was involved, but Tom Teodorczuk says the fallout from the massive email leak could be felt for years

Hour of Code: tech firms unite as computer programming takes centre stage in education

Apple and other tech firms have worked together to create tools to teach children to code — and it's becoming clear that they don't need much encouragement

Shock and pour: UK residents caught unaware by a recent storm

Right as rain? The rise of hashtag meteorology

This week's 'weatherbomb' has taken the country – and social media – by storm. Jack Seale explains why hashtag meteorology is unlikely to blow itself out any time soon

Geek Mythology: I'm troubled by the rise of word 'bae'. But that’s the internet for you

Neither 'bim' nor 'gomping' will pass into common parlance, but I love them

High flyers: the Google Project Loon balloon is a high altitude WiFi internet hub

Up, up and away on Google’s wi-fi balloon

Experts scoffed at the company’s plan to deliver internet via balloon to the world’s poorest regions. Now 75 are flying high

Amazon Kindle Voyage review: the best way to read since books

Amazon's new Kindle gets rid of many of the irritating things about ebooks —  and packs in new features, too

A meteor streaks across the sky during the Perseid Meteor Shower at a wind farm near Bogdanci, south of Skopje, Macedonia, in the early hours of 13 August

Geminids meteor shower: how to photograph the UK’s shooting stars

There won't be a better time this year to have a go at taking pictures of the night sky — here are our tips for how to get the best snaps of the shooting stars passing over the UK this week

PlayStation at 20: how Sony’s console has grown up with its players

PlayStation Europe’s CEO, Jim Ryan, on PlayStation’s 20th birthday, and where it might go in its next 20 years

Online reviewers fill a vacuum for the average consumer - and our opinions carry huge weight

At this time of year in particular, we find ourselves relying on customer reviews to help us make tricky consumer decisions online

Up in the air: a DJI Phantom drone takes to the sky

Drones are set to take off this Christmas - but there are unexpected dangers in the skies

Now that they have cameras and a vaguely menacing name, remote-control flying gadgets are set to be a very popular present this year - but think before you stick one under the tree, says Seth Stevenson, as he turns test pilot

Orion capsule is headed into deep space – and it takes hopes for commercial space travel and Mars with it

After a private rocket blew up just weeks ago, and as public enthusiasm for space travel surges, the Orion launch could make or break commercial space travel and hopes for exploration of Mars

Art broken: the images that used to appear on DIY posters and leaflets are no longer part of Microsoft Office

Goodbye Clip Art: Vitally important bad design

Microsoft's Clip Art provided simple images for decorating documents with. Now it has been declared obsolete, and DIY leaflets will never be the same, says Rhodri Marsden

Christmas cooking with help from your tablet: how to replace cookbooks with apps

Tablet apps can make a good alternative to cookery books — and can still be operated without hands. David Phelan takes in a cookery school taught using a tablet, and explores the best apps for Christmas chefs

Remember to have a good stretch at your desk

Laptops, tablets and phones don't encourage good posture - let's spare a thought for our bodies

A few months ago, I found myself lying face down on a bench somewhere in London's Square Mile, being viciously pummelled by a South African sports injury specialist who'd just diagnosed me with some kind of acute shoulder blade complaint. It became apparent to her through casual questioning that this injury had not been sustained through vigorous activity. Feeble inactivity was more to blame.

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Day In a Page

Independent Travel
Pompeii, Capri & the Bay of Naples
Seven Cities of Italy
Burgundy, the River Rhone & Provence
Prague, Budapest and Vienna
Lake Garda
3.	Provence 6 nights B&B by train from £599pp
Prices correct as of 20 February 2015
Syrian conflict is the world's first 'climate change war', say scientists, but it won't be the last one

Climate change key in Syrian conflict

And it will trigger more war in future
How I outwitted the Gestapo

How I outwitted the Gestapo

My life as a Jew in wartime Berlin
The nation's favourite animal revealed

The nation's favourite animal revealed

Women like cuddly creatures whilst men like creepy-crawlies
Is this the way to get young people to vote?

Getting young people to vote

From #VOTESELFISH to Bite the Ballot
Poldark star Heida Reed: 'I don't think a single bodice gets ripped'

Poldark star Heida Reed

'I don't think a single bodice gets ripped'
The difference between America and Israel? There isn’t one

The difference between America and Israel? There isn’t one

Netanyahu knows he can get away with anything in America, says Robert Fisk
Families clubbing together to build their own affordable accommodation

Do It Yourself approach to securing a new house

Community land trusts marking a new trend for taking the initiative away from developers
Head of WWF UK: We didn’t send Cameron to the Arctic to see green ideas freeze

David Nussbaum: We didn’t send Cameron to the Arctic to see green ideas freeze

The head of WWF UK remains sanguine despite the Government’s failure to live up to its pledges on the environment
Author Kazuo Ishiguro on being inspired by shoot-outs and samurai

Author Kazuo Ishiguro on being inspired by shoot-outs and samurai

Set in a mythologised 5th-century Britain, ‘The Buried Giant’ is a strange beast
With money, corruption and drugs, this monk fears Buddhism in Thailand is a ‘poisoned fruit’

Money, corruption and drugs

The monk who fears Buddhism in Thailand is a ‘poisoned fruit’
America's first slavery museum established at Django Unchained plantation - 150 years after slavery outlawed

150 years after it was outlawed...

... America's first slavery museum is established in Louisiana
Kelly Clarkson: How I snubbed Simon Cowell and become a Grammy-winning superstar

Kelly Clarkson: How I snubbed Simon Cowell and become a Grammy-winning superstar

The first 'American Idol' winner on how she manages to remain her own woman – Jane Austen fascination and all
Tony Oursler on exploring our uneasy relationship with technology with his new show

You won't believe your eyes

Tony Oursler's new show explores our uneasy relationship with technology. He's one of a growing number of artists with that preoccupation
Ian Herbert: Peter Moores must go. He should never have been brought back to fail again

Moores must go. He should never have been brought back to fail again

The England coach leaves players to find solutions - which makes you wonder where he adds value, says Ian Herbert
War with Isis: Fears that the looming battle for Mosul will unleash 'a million refugees'

The battle for Mosul will unleash 'a million refugees'

Aid agencies prepare for vast exodus following planned Iraqi offensive against the Isis-held city, reports Patrick Cockburn