US remembers 9/11 five years on
Sombre ceremonies are held in the US to mark five years since the 11 September attacks that killed 2,973.

Intense emotions at Ground Zero
Private grief and public emotion create an intense mix at Ground Zero five years on, writes the BBC's Richard Greene.

New York, an altered city
Stephen Evans looks at how New Yorkers have been affected, five years on from the 9/11 attacks.

Small community scarred by 9/11
The BBC's Stephen Evans visits Warwick, a small town along the River Hudson, to see how it is coping.

Children struggle with memories
The mental scars of children in New York are often just below the surface - but deep nonetheless.

NY Muslims keep the faith
New York's Muslims have been through a period of reflection since the 11 September attacks, Stephen Evans reports.

Clean-up team pay health cost
Nearly seven out of 10 Ground Zero workers have suffered lung problems during or after work there, according to the largest study on 9/11-related health effects.

Cantor rebuilds after 9/11 losses
Investment bank Cantor Fitzgerald was hit harder than any other company by the 9/11 attacks. Stephen Evans speaks to its chief executive.

Ground Zero designs unveiled
Designs for three more Ground Zero towers to complete the new World Trade Centre are unveiled.

Bush urges US to back war
President Bush urges Americans to unite behind the "war on terror" in a speech marking five years since 9/11.

Voices of the affected
Three people who were personally affected by the attacks on 11 September recount their experiences and describe how their lives have been impacted by the events of that day.

Memories of Pentagon attack
Survivors of the attack on the Pentagon reflect on what has changed in the last five years - and what has not.

Scotland pays 9/11 heroes tribute
A memorial service in Glasgow remembers firefighters and police officers who died when the Twin Towers collapsed in New York.

Brother welcomes United 93 film
The story of United Airlines Flight 93 is turned into a film with the backing of most passengers' families.

In graphics: How the towers fell
Animated guide to the collapse of the World Trade Center's twin towers.

9/11 report: Key findings
The key findings of the report by the US commission probing the 11 September attacks.

Building a skyscraper after 9/11
What safety features will the new centrepiece of the World Trade Center site have in place?

Q&A: Moussaoui trial
Key points about the trial of Zacarias Moussaoui, the only person charged in the US over the 9/11 attacks.

Timeline: Al-Qaeda
A timeline illustrating the history of Osama Bin Laden's network and major attacks linked to it.