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It will be difficult – but not impossible – to detect the chemical breakdown products of any nerve agents that may have been used in the Damascus attack, but access to the victims could be critical in proving the illicit use of chemical weapons.

Jessica Judd has put her exam results on the back-burner

World Championships 2013: Jessica Judd faces track test as tough as her A-levels

The world's best will examine recent strides made by Britain's middle-distance rookie

US scientists have made claims that low-doses of aspirin may stop growth of breast cancer

Low-dose aspirin may stop growth of breast cancer, study suggests

Small doses of aspirin may block the growth and spread of the most virulent strains of breast cancer, research has revealed.

Scientists are closer to building a biological computer after they managed to make a transistor from DNA and RNA

Biological computer that 'lives' inside the body comes one step closer as scientists make transistor out of DNA and RNA

Finding could lead to new biodegradable devices based on living cells that are capable of detecting changes in the environment

Standing up daily for an extra 90 minutes significantly lowers your chances of developing this serious metabolic disorder

Desk workers - stand up for your health: Millions may be making themselves ill by spending their working lives sitting down

If you are reading this sitting down then the chances are you are also increasing your risk of developing heart disease, blood clots on the brain and even certain types of cancer.

Levi-Montalcini: she attributed her success partly to ‘the habit of underestimating obstacles’

Rita Levi-Montalcini: Neuroscientist honoured for her work on cell development

Her experience of women’s subordinate role, she said, told her 'I was not cut out to be a wife'

Two American scientists win Nobel chemistry prize for understanding how the billions of cells within the human body communicate with the outside world

Robert Lefkowitz and Brian Kobilka won the prize for their pioneering roles in revealing the inner workings of an important family of protein molecules called the G-protein-coupled receptors

Rashid Ramzi has been named as one of six competitors from last summer's Beijing Games who have failed retrospective tests for
the blood-boosting hormone CERA

Delay awarding Olympic medals for eight years, says biochemist

Medals won at the London Olympics should not handed out until 2020 because it will be years before testers can be sure that the athletes did not take drugs, a leading sports scientist has suggested.

Chris Cooper: The biochemist says cheat may exploit medical breakthroughs

Delay awarding London 2012 Olympic medals for eight years, says biochemist

Cheating athletes 'could exploit medical advances by using drugs not yet detectable'

Performance boost: Canadian sprinter Ben Johnson

Run, Swim Throw, Cheat: The Science Behind Drugs In Sport, By Chris Cooper

A scientific review of genetic technology that can give tomorrow's athletes a helping hand

Breakthrough could lead to cure for chronic liver disease

Medical scientists have taken an important step towards understanding how the diseased liver can repair itself in a breakthrough that could eventually lead to the development of new treatments for chronic liver illnesses, which at present can only be cured by organ transplants.

Mild chemical agents are used for cases similar to the Tottenham riots

Government 'may sanction chemical incapacitant use on rioters', scientists fear

Leading neuroscientists believe that the UK Government may be about to sanction the development of chemical incapacitants for British police that would be banned in warfare under an international treaty on chemical weapons.

Digital 3D 'bins' have a place, but will twitchers be switchers?

A greenfinch looks on suspiciously from afar. The finest details of his green and yellow plumage and his eyes twitching from side to side are visible through the binoculars.

Empires of Food, By Evan DG Fraser and Andrew Rimas

Written in lively style by two American academics, this book questions the stability of the "food empire" on which humanity depends. We are complacent, they claim, due to four assumptions: there will be more "biochemical fixes" to maintain bumper crops; continuation of the "mild, sunny weather" of recent centuries; dependence on fragile monocultures; reliance on cheap fossil fuels to power freezers and synthesise fertilisers. "For a hundred years," the authors point out, "our industrial food empire has been astoundingly successful but all empires stumble and fall."

Baruch Blumberg

Further to yesterday's obituary of the Nobel Prize-winning scientist Baruch Blumberg, Tam Dalyell writes:

Last Night's TV: Women in Love/BBC4<br />Monroe/ITV1<br />A Farmer's Life For Me/BBC2

Rather a lot happened in the first part of BBC4's Women in Love – two drownings, at least one fight, a rape – though you wouldn't necessarily know it. The quiet, almost whimsical, nature of William Ivory's script allowed events to unfold gently, playing second fiddle to the internal dramas of the characters. It's a risky strategy: an adaptation of D H Lawrence's dual novels, The Rainbow and Women in Love, in which the predominant themes are sex and guilt could be a recipe for introspective torpor if ever there was one. And yet, to my mind, it all came off.

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How could three tourists have been battered within an inch of their lives by a burglar in a plush London hotel?

A crime that reveals London's dark heart

How could three tourists have been battered within an inch of their lives by a burglar in a plush London hotel?
Meet 'Porridge' and 'Vampire': Chinese state TV is offering advice for citizens picking a Western moniker

Lost in translation: Western monikers

Chinese state TV is offering advice for citizens picking a Western moniker. Simon Usborne, who met a 'Porridge' and a 'Vampire' while in China, can see the problem
Handy hacks that make life easier: New book reveals how to rid your inbox of spam, protect your passwords and amplify your iPhone

Handy hacks that make life easier

New book reveals how to rid your email inbox of spam, protect your passwords and amplify your iPhone with a loo-roll
KidZania lets children try their hands at being a firefighter, doctor or factory worker for the day

KidZania: It's a small world

The new 'educational entertainment experience' in London's Shepherd's Bush will allow children to try out the jobs that are usually undertaken by adults, including firefighter, doctor or factory worker
Renée Zellweger's real crime has been to age in an industry that prizes women's youth over humanity

'Renée Zellweger's real crime was to age'

The actress's altered appearance raised eyebrows at Elle's Women in Hollywood awards on Monday
From Cinderella to The Jungle Book, Disney plans live-action remakes of animated classics

Disney plans live-action remakes of animated classics

From Cinderella to The Jungle Book, Patrick Grafton-Green wonders if they can ever recapture the old magic
Thousands of teenagers to visit battlefields of the First World War in new Government scheme

Pupils to visit First World War battlefields

A new Government scheme aims to bring the the horrors of the conflict to life over the next five years
The 10 best smartphone accessories

Make the most of your mobile: 10 best smartphone accessories

Try these add-ons for everything from secret charging to making sure you never lose your keys again
Mario Balotelli substituted at half-time against Real Madrid: Was this shirt swapping the real reason?

Liverpool v Real Madrid

Mario Balotelli substituted at half-time. Was shirt swapping the real reason?
West Indies tour of India: Hurricane set to sweep Windies into the shadows

Hurricane set to sweep Windies into the shadows

Decision to pull out of India tour leaves the WICB fighting for its existence with an off-field storm building
Indiana serial killer? Man arrested for murdering teenage prostitute confesses to six other murders - and police fear there could be many more

A new American serial killer?

Police fear man arrested for murder of teen prostitute could be responsible for killing spree dating back 20 years
Sweetie, the fake 10-year-old girl designed to catch online predators, claims her first scalp

Sting to trap paedophiles may not carry weight in UK courts

Computer image of ‘Sweetie’ represented entrapment, experts say
Fukushima nuclear crisis: Evacuees still stuck in cramped emergency housing three years on - and may never return home

Return to Fukushima – a land they will never call home again

Evacuees still stuck in cramped emergency housing three years on from nuclear disaster
Wildlife Photographer of the Year: Intimate image of resting lions claims top prize

Wildlife Photographer of the Year

Intimate image of resting lions claims top prize
Online petitions: Sign here to change the world

Want to change the world? Just sign here

The proliferation of online petitions allows us to register our protests at the touch of a button. But do they change anything?