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Scientists make 'feel full' chemical

Scientists make 'feel full' chemical

Scientists have created a chemical that can be added to food to make people feel full. Initial tests showed it helped people to eat less and slow weight gain. It harnessed the power of a proprionate, which naturally makes us feel full when it is produced by breaking down fibre in the gut. Writing in the...

Mars rover finds stronger potential for life

Mars rover finds stronger potential for life

For lifeless chemical compounds to organise themselves into something alive, scientists generally agree, three sets of things must be present: Standing water and an energy source. Five basic elements: carbon, oxygen, hydrogen, phosphorus and nitrogen. And time, lots of time. In its search for environments where life might have started on Mars, the Curiosity rover has found...

Stephen Hawking warns artificial intelligence could end mankind

Stephen Hawking warns artificial intelligence could end mankind

Prof Stephen Hawking, one of Britain's pre-eminent scientists, has said that efforts to create thinking machines pose a threat to our very existence. He told the BBC:"The development of full artificial intelligence could spell the end of the human race." His warning came in response to a question about a revamp of the technology he...

Facebook, Twitter data do not reveal true human behaviour

Facebook, Twitter data do not reveal true human behaviour

Using social media such as Twitter and Facebook to gather data on human behaviour may be fraught with biases, scientists say. Behavioural scientists use social media to quickly and cheaply gather huge amounts of data about what people are thinking and doing but researchers at Carnegie Mellon University in the US and McGill University...

Mirror to replace air cooler?

Mirror to replace air cooler?

A mirror that sends heat into the frigid expanse of space has been designed by scientists to replace air-conditioning units that keep buildings cool on Earth. Researchers believe the mirror could slash the amount of energy used to control air temperatures in business premises and shopping centres by doing away with power-hungry cooling systems. Around...

Mind reading possible?

Mind reading possible?

It might seem the stuff of science fiction, but a mind-reading device is being developed by scientists which can evesdrop on your inner-voice. Researchers at the University of California, Berkeley, have developed a machine and computer programme which converts brain activity into sounds and words. Speech activates specific neurons as the brain works interpret...

All that glitters is not 23-karat gold

All that glitters is not 23-karat gold

Scientists, examining Britain's greatest Anglo-Saxon gold treasure collection, have discovered that it isn't quite as golden as they thought. Tests on the famous Staffordshire Anglo-Saxon treasure, a vast gold and silver hoard found by a metal detectorist five years ago, have now revealed that the 7th century Anglo-Saxon goldsmiths used sophisticated techniques to make...

Plants 'absorb more CO2 than thought'

Plants 'absorb more CO2 than thought'

Global climate models have underestimated the amount of CO2 being absorbed by plants, according to new research. Scientists say that between 1901 and 2010, living things absorbed 16 percent more of the gas than previously thought. The authors say it explains why models consistently overestimated the growth rate of carbon in the atmosphere. But experts believe...

Cave paintings change ideas about the origin of art

Cave paintings change ideas about the origin of art

Scientists have identified some of the earliest cave paintings produced by humans. The artworks are in a rural area on the Indonesian Island of Sulawesi. Until now, paintings this old had been confirmed in caves only in Western Europe. Researchers tell the journal Nature that the Indonesian discovery transforms ideas about how humans first developed the...

Polar ice shrinking rapidly

Polar ice shrinking rapidly

The planet's two largest ice sheets -- in Greenland and Antarctica -- are now being depleted at an astonishing rate of 120 cubic miles each year. That is the discovery made by scientists using data from CryoSat-2, the European probe that has been measuring the thickness of Earth's ice sheets and glaciers since...

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