On the 25th anniversary of the September 11, 2001 attacks, the world remembers the devastating day when 2,753 people were killed after two hijacked planes were flown into New York City's World Trade Center.A further 184 people died when another hijacked plane crashed into the Pentagon in Arlington, Virginia, while 40 passengers and crew were killed when those aboard United Airlines Flight 93 bravely fought back against hijackers, sending the plane crashing into an empty field in Pennsylvania. In the years after the attack, the death toll in New York rose to 2,996 as a result of the harm caused by exposure to the dust at Ground Zero. Thousands more still suffer long-term health problems, including emergency service workers who risked their lives to rescue as many people as possible.And one man was responsible for the terror and destruction of that day, and the subsequent decades-long wars in the Middle East: Osama Bin Laden.Bin Laden founded Al-Qaeda in 1988, and admitted to orchestrating the 9/11 attacks. Satisfied with his work, he went to ground immediately after the attack and was hunted by the US and its intelligence partners for a decade, before being killed in his home and unceremoniously dumped in the sea.Although the name Bin Laden will forever be associated with terror and fear, the Al-Qaeda leader has many relatives who are not only living very different lives from him, but actively seek to combat the poisonous legacy he left behind.