Friday 27 November 1998
Basil Swanson from the Los Alamos National Laboratory in the United States isolated the natural protein within cell membranes that binds to cholera toxin and embedded the receptor in an artificial membrane coating a glass bead. When a cholera toxin molecule binds to the membrane it causes a reaction that emits a red light from the bead. New Scientist reports that the US Army is studying a version of the test to see if it can be used on the battlefield to detect the use of biological weapons.
A CERAMIC pot thought to be for separating curds from whey might actually have been an early soldering device used to create the intricate metalwork patterns of the Bronze Age. How metalworkers created the delicately soldered knots and scrolls of wire has been a mystery because of the difficulties of creating a flame hot enough to melt metal yet small enough to be handled easily. Jacqui Wood, an archaeologist who runs the Cornwall Celtic Village, a reconstruction of a Bronze Age village, studied a pot with its sides riddled with holes that was thought to be a device for straining curds. The inside, however, was vitrified, indicating repeated heating. When she put a lit candle underneath, a flame 20 centimetres high shot from the top - just the sort of strong yet localised heat needed for soldering metal.
BREAKFAST CEREALS and bread are being contaminated with increasing numbers of small beetles and mites, according to a report in New Scientist. As the insects become resistant to pesticides, their rising numbers are posing problems for cereal manufacturers.
Ken Wildey of the Government's Central Science Laboratory in York found 81 per cent of the 279 grain stores he surveyed contained mites and 27 per cent were infested with beetles. He also found that 21 per cent of cereal-based foods contained mites, some of which could have been alive as his test killed the insects.
A The film has amassed an estimated $28.7 million in its opening weekend
A statement was published on his fansite, True To You, following release of new album
Arts & Ents blogs
- 1 Michael Brown shooting: Police shoot and kill second young black man near Ferguson
- 2 James Foley 'beheaded': Isis video shows militant with British accent 'execute US journalist' – and warns Obama of more to come
- 3 Why are UK rail fares so expensive?
- 4 Here’s the damning letter Robin Williams wrote to his Mrs Doubtfire co-star's principal after they expelled her
- 5 Cilla Black defends Cliff Richard: 'I am positive that the allegations are without foundation'
Calvin Harris named highest-paid DJ in the world ahead of David Guetta and Avicii
JK Rowling releases new Harry Potter story on Pottermore: Introducing Celestina Warbuck, the 'Singing Sorceress'
Reading Festival 2014: Tesco branch replaces salad and potatoes for Jagermeister and vodka
Kate Bush: Previously unseen photographs reveal new side to comeback star
The funniest joke at Edinburgh Fringe 2014: Tim Vine wins for second time
Scottish independence: English people overwhelmingly want Scotland to stay in the UK
Isis threat: Cameron wants an alliance with Iran
Crisis? What crisis? A visiting US doctor gives the NHS a rave review
Russell Brand calls for Israel boycott: Comedian urges big businesses that 'facilitate the oppression of people in Gaza' to pull funding
Ukip MEP calls for reintroduction of death penalty on fiftieth anniversary of last deaths
Michael Brown shooting: Chaos erupts on the streets of Ferguson after autopsy shows teenager was shot six times – twice in the head