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Carl Woese was a biophysicist and microbiologist who uncovered the "third domain" of life, with the detection of archaea. In doing so he redrew the taxonomic tree and proved that all life on Earth is related.
Test kits are swabbed with sputum or urine to show patients' suitability for certain drugs
Research has already led to the creation of a mutated form of avian flu that can spread easily between mammals – including humans
Components required to sustain simple microorganisms could have been present on Mars for much of its history, say scientists
US government's hopes of suppressing details of controversial research may be doomed, say scientists
The fossilised remains of the oldest known lifeforms on Earth have been discovered in samples of rock collected near a remote watering hole in the middle of the Australian Outback.
Scientists have found 1,400 strains of bacteria lurking in human belly buttons. The discovery was made during a study in which 95 volunteers allowed a team of microbiologists to gaze at their navels and take swabs from inside their belly buttons.
Depending on your point of view, dirt can be a deadly foe, an unsavoury sight or a mark of authenticity. We live in an age of extreme cleanliness but our conflicted feelings about filth are anything but neat and tidy, argues Andrew Martin
Visitors arrived at The Smithfield Gallery last week to see some of the world’s most deadly viruses and bacteria up close. Luke Jerram's Viral Sculptures sees some of the world’s most deadly diseases intricately rendered into translucent glass works.
Matters of (after) life and death
British scientists search for life forms hidden more than 400,000 years ago beneath Antarctic ice
The possibility of a synthetic life form being created in a laboratory has come tantalisingly close to reality after scientists said last night that they had generated the largest man-made molecule of DNA – the chemical blueprint of life.