New research contradicts the belief that the primordial world’s atmosphere was thicker and it was not able to sustain life and thrive.
The actor, who played the logical human-alien Mr Spock in the cult Star Trek TV series and subsequent movies, has died after battling a lung disease.
A study has revealed that increasing levels of carbon dioxide could adversely affect the nutrition levels in some of our most important food crops.
US Secretary of State John Kerry has sought to reassure sceptics in the US Congress who worry that Iran might not follow through on its obligations.
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/ 11 December 2007
Human evolution has been moving at breakneck speed in the past several thousand years, far from plodding along as some scientists had thought. People today are genetically more different from people living 5 000 years ago than those humans were different from the Neanderthals who vanished 30 000 years ago.
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/ 7 September 2007
It’s official: Your toddler is smarter than a chimp, at least at some things. A unique study comparing the abilities of human toddlers to chimpanzees and orangutans found that two-year-old children have social learning skills superior to the apes, researchers said on Thursday.
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/ 15 February 2007
Scientists have captured an image of the Aids virus in a biological handshake with the immune cells it attacks, and said on Wednesday they hope this can help lead to a better vaccine against the incurable disease. They pinpointed a place on the outside of the human immunodeficiency virus that could be vulnerable to antibodies that could block it from infecting human cells.
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/ 2 December 2006
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About 1,2-million people in countries hard hit by HIV/Aids are receiving life-extending drugs thanks to two major United States and international funds, double from a year ago, but many millions more need help, the funds said on Friday. The figures were announced on World Aids Day as activists around the world turned a spotlight on the scourge of Aids and pleaded for more action
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/ 21 November 2006
Scientists have found a way to use the cotton plant, long a source of fibre for clothing but inedible by humans, to feed potentially half a billion people a year. Plant biotechnologist Keerti Rathore and colleagues reported on Monday they have genetically altered the plant to reduce the levels of the toxic chemical gossypol.
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/ 13 October 2006
Initial tests of air samples taken by United States planes near North Korea found no evidence of radiation, but the US is not ready to declare that Pyongyang did not detonate a nuclear device, a US government intelligence official said on Friday. Monday’s announcement by North Korea that it had tested a nuclear bomb sharply escalated world concerns.