Show of love or early warning system? The engagement ring that lights up when your fiance is close by

The glowing ring contains tiny LEDs which light up when a transmitted is nearby - and took five months to build.

Could we soon REGROW limbs? Scientists say salamander discovery could lead to radical new treatments

A California Tiger Salamander: researchers have found a type of cell integral to its ability to regrow damaged limbs - and believe it could one day lead to human therapies

Australian scientists say immune cells called macrophages could be vital for regeneration - and could help scientists control the process and even use it in humans.

Twitter reveals massive security overhaul in bid to stop high-profile hacks

Twitter has launched an optional two-step login verification that can be enabled in the account settings page. Users must enter a mobile number to enable the feature.

Twitter has launched two-step logins following a number of serious hacks. The feature, called login verification, can be enabled from a user's account settings page and requires a unique six-digit code be entered each time a user logins into their account.

Neanderthal mothers breastfed their babies for over a year - just like humans

A 3D reconstruction of a tooth:

US researchers analysed tooth of a 10-12 year-old child that lived in a cave in Belgium around 100,000 years ago - and found it it was breastfed exclusively for seven months followed by seven months of supplementation.

The camera that is out of this world: Rare Nasa Hasselblad used to photograph Earth from the first orbiting space station set to be sold

The modified Hasselblad 500 EL/M was taken to the moon during the NASAs Skylab 3 and Skylab 4 missions in 1973

A rare Nasa camera used aboard Skylab, the first US Space Station, which orbited the Earth in 1973, is set to be auctioned.

Astronomers spot 'missing link' collision creating a supermassive galaxy ten times the size of the Milky Way

The image at right shows a close-up view, with the merging galaxies circled.

Two hungry young galaxies that collided 11 billion years ago (pictured) are rapidly forming a massive galaxy about 10 times the size of the Milky Way, California astronomers have found.

'Miracle ingredient' in red wine could help people live longer and more energetic lives

A 'miracle ingredient' found in red wine, called reservatrol, has been found to increase the lifespan of worms by up to 60%.

Scientists from the Ecole Polytechnique Fédérale de Lausanne have tested the effects of reservatrol, an ingredient found in red wine, on worms. It was found to increase lifespan by 60% and a similar technique could work on humans, they believe.

Why teens are turning away from Facebook: Squabbling friends who overshare and prying eyes of parents are causing 'Facebook fatigue'

Twitter

Teens told researchers there were too many adults on Facebook and too much sharing of teenage angst and inane details like what a friend ate for dinner.

Is this the first 3D-printed BULLET? YouTube video shows range of homemade ammunition being fired

3D printed bullet fired at a target using Mossberg 590 shotgun

A YouTube video shows three different kinds of 3D printed bullets being fired at various targets using a Mossberg 590 shotgun. The plastic pellets are fitted into regular shotgun casing with lead shot added to give them weight.

A monkey with blue genitals, glow-in-the-dark cockroaches and the world's smallest violet: 2012's 'best' new species revealed

Hanging Around in the Jurassic Juracimbrophlebia ginkgofolia Country: China

The top 10 best new species, all discovered in 2012, have been unveiled by the International Institute for Species Exploration at Arizona State University. Among the winners was a glow-in-the-dark cockroach, a 7mm frog and a butterfly discovered on Flickr. A total of 140 species were submitted and scientists claim we discover an average of 18,000 species worldwide every year.

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The real-life tricorder: Scientists create device that can measure all of the vital signs in just TEN seconds

Real Life Tricorder preview.png

The £100 Scanadu Scout can measure heart rate, temperature, blood pressure, blood oxygen levels, respiratory rate, ECG and emotional stress. It takes the readings when held to the forehead and then uses Bluetooth to send them to a smartphone app (top left), much like the Star Trek tricorder (bottom right).

Is our universe merely one of billions? Evidence of the existence of 'multiverse' revealed for the first time by cosmic map

Multiverse: The evidence

Scientists studying radiation data from the European Space Agency's Planck spacecraft have found unexpected anomalies that they say can only be explained by the existence of other universes.

The gadget that lets you play with your pet (and send them barking mad) from anywhere in the world

The small cube is placed on a bookshelf, and projects a movable laser spot on the floor, which can be moved using a special app

The PetCube, developed by a Ukranian dog-owner, has a webcam and a low power laser in it it, and users can remotely control the laser and watch their pet's reaction.

A giant meteor - not overhunting - wiped out the woolly mammoth because it struggled to cope with the rapid climate change that followed

The woolly mammoth was probably wiped out by rapid climate change caused by a meteor striking the Earth, not by hunting as previously believed

Research published in the journal Proceedings of the National Academy of Sciences suggests that a meteor strike 12,800 years ago caused rapid climate change which caused the extinction of the mammoth.

What do you do with the world's most advanced supercomputer? Give it a job in a call centre, of course...

Watson, powered by IBM POWER7, is a work-load optimized system that can answer questions posed in natural language over a nearly unlimited range of knowledge.

New York-based technology company IBM is putting its supercomputer Watson to work - in a robot call centre. Companies will be able to sign up to the scheme and their customers will be able to complain and get advice from artificially intelligent computer system Watson.

The discovery that could rewrite Australian history: Ancient copper coins suggest the country was found SIX CENTURIES before Captain Cook arrived

Coins found on Wessel Islands north of Australia date back to the 900s

Researchers from Indiana University are trying to discover how copper coins from Africa, dating back to the 900s, ended up in Australia six centuries before the antipodean country was first 'discovered'.

Why the Egyptians only had sex in the summer: Researchers find key time for conception was in July and August to coincide with the Nile flooding

A Roman mosaic depicting the flooding of the Nile from the 1st century BC

Archaeologists working at a cemetery in the Dakhleh Oasis in Egypt found that there were 20 per cent more births in March and April than in other months.

Russian capsule carrying mice and lizards lands safely after month-long space mission - but not many passengers survived

Mice, gerbils and lizards are among the animals that spent a month orbiting in space on the Bion-M capsule

A Russian space capsule carrying mice, lizards and gerbils has landed safely back on Earth after spending a month in space. The animals were part of tests by Russian scientists looking at the effects of weightlessness on the animals' bodies.

Are giant 'pinkhouses' the future of urban farming? Warehouses could be turned into year-round farms using artificial lights

A giant 'pinkhouse' at Caliber Biotherapeutics in Bryan, Texas, which grows 2.2 million plants under the glow of blue and red LEDs - and could become the future of urban farming

A Texas firm has unveiled a vast warehouse growing 2.2 million tobacco plants under pink lighting - and researchers at Purdue University say it could be the future of urban farming.

The sharp-shooter app: Attachment for rifles replaces scope with an iPhone showing detailed zoom and weather conditions

The Shooter Tactical Rifle Adapter from Inteliscope can be used with any firearm that has a Picatinny or Weaver tactical mount.

Idaho-based company Inteliscope has created the Shooter Tactical Rifle Adapter that can replace the scope of a gun with an iPhone or iPod Touch. The scope has 5X digital zoom, crosshairs, a built-in GPS mapper and compass.

Is the 'hairy skyscraper' the future of cities? Radical eco-design covered in energy generating fibres revealed

An artist's impression of the 'hairy skyscaper' planned for Stockholm.

Swedish designers hope to built the experimental building in the centre of Stockholm, and cover it is 'straws' which turn movement by the wind into energy.

Finally, a gadget that can keep your beer cold AND stop it going flat: £20 Chillsner cools from inside the bottle

The Chillsner goes on sale from June this year and will cost around £20 ($29.95)

The Chillsner, designed by Orlando-based gadget company Corkcicle, looks like an icicle and sits inside drinks bottle in order to keep them colder for longer.

How singing a lot of songs doesn't make sparrows the smartest in the flock

A male song sparrow in British Columbia: Researchers found that the best singers among a group of the birds were the worst at food-finding puzzles

US researchers found that the best singers among a group of sparrows were the worst at food-finding puzzles.

Practice may NOT make perfect: Innate talent is what's required for greatness in areas such as games or music

Differences in practice levels are not enough to explain why people differ in ability when taking part in activities such as playing chess or music

Scientists at Michigan State University, in the U.S., found that differences in practice levels are not enough to explain why people differ in ability at certain activities.

How echo technique could help the blind: Visually impaired can locate items by listening to echoes - like dolphins and bats

They used sounds with different bandwidths and lengths to reveal which aspects of the sounds were important

The research found those with impaired vision have the potential to use echolocation to find objects in the same manner as animals such as dolphins or bats.

Scientists create the smallest droplet of liquid ever seen - and say it may help explain how the Universe formed

The tiniest droplets

Researchers using the Large Hadron Collider in Switzerland have created the smallest drops of liquid ever made in the lab (pictured) - and say it could help them understand the conditions straight after the Big Bang.

The many faces of Google Earth: Global scan for human-looking features begins

This face,found by the Google Faces project, looks like a Jedi Knight from the Star Wars films.

German researchers have developed a computer system created in openFrameworks - a creative coding program - that can scan Google Earth satellite images looking for faces. The scanner searches the entire world, switches to the next zoom level and starts again, taking snapshots and co-ordinates of all the 'faces' it finds. Onformative admit that not all the so-called faces are recognisable and these are dismissed.

From how wind travels around Earth to the patterns of gliding bacteria, the stunning images taken during scientific research

Winning entries from the Princeton University Art of Science competition showing the flow of wind around Earth, gliding bacterium, ovary cells and more

The detailed photos, which include images of RNA molecules that help form part of a fruit fly ovary and also drops of liquids trapped between two solids, were among the entrants to this year's Art of Science competition at Princeton University.

So you want to be a spaceman? 12 days on the seabed, a week in a cave, lessons in Russian (and the didgeridoo)... the gruelling training of Britain's new astronaut

The countdown to blast-off for Major Tim Peake has included a week in an underground cave and 12 days on the bottom of the sea

Major Peake, Britain's first astronaut for 20 years, took stomach-churning 'zero gravity' flights and learned Russian to communicate on the International Space Station.

Rare moon dust collected during Apollo 11 mission discovered in Californian warehouse - 43 YEARS after being abandoned

Moon dust found in a warehouse 43 years after it was sampled

Archivists at the Lawrence Berkeley National Laboratory in California have unearthed 20 vials of moon dust dating back to 24 July 1970, collected by Neil Armstrong and Buzz Aldrin during the Apollo 11 mission.

The Wright Brothers were NOT the first to fly a plane - a German pilot beat them to it two years earlier in a flying car, claims leading aviation journal

Gustave Whitehead is thought to have flown a plane two years before the Wright Brothers

Claims made in Jane's All The World's Aircraft journal state that German aviation pioneer Gustave Whitehead may have been the first man to successfully fly a plane, beating the Wright Brothers' infamous flight by two years.

'Mystery' of why penguins can't fly is solved: Their wings are better at swimming - 'and no bird can excel at both'

Penguins lost the ability to fly as they developed more efficient wing-propelled diving skills that allowed them to better forage for food

Scientists at Aberdeen University said that penguins started to fly through the ocean instead of the air as they developed wing-propelled diving skills that allowed them to forage for food at increasing depths.

Microsoft unveils the new Xbox One - with improved voice controls, an exclusive Halo TV show, built-in Skype and a redesigned Kinect sensor

Microsoft has announced its Xbox One - a new games console with improved voice recognition and gesture controls, built-in Skype features and multi-tasking Snap Mode.

Microsoft has unveiled the Xbox One at an official launch event in Washington. The new Xbox One has been designed to run much faster than its Xbox 360 predecessor. It has improved voice recognition, Skype functions built-in and comes with a completely redesigned version of its motion-sensing technology Kinect.