Editing Hypocenter (section)

==World Trade Center==
{{Main article|World Trade Center site}}
[[File:Wtc-photo.jpg|thumb|right|Aerial view of the [[World Trade Center site]] in September 2001.]]
During the [[September 11 attacks]] in 2001, two aircraft [[Aircraft hijacking|were hijacked]] by 10 [[al-Qaeda]] [[Terrorism|terrorists]] and were flown into the Twin Towers of the [[World Trade Center (1973–2001)|World Trade Center]] in [[New York City]], causing massive damage and starting fires that [[Collapse of the World Trade Center|caused the weakened 110-story skyscrapers to collapse]]. The destroyed [[World Trade Center site]] soon became known as "ground zero". Rescue workers also used the term "The Big Momma!", referring to the pile of rubble that was left after the buildings collapsed.<ref>{{cite news|last=Hamill | first= Denis|title=Rescue Workers Keep Up Quest for Signs of Life Ruin All Over, But Not One Unkind Word|work=[[Daily News (New York)]]|date=16 September 2001}}</ref>

Even after the site was cleaned up and construction on the new [[One World Trade Center]] and the [[National September 11 Memorial & Museum]] were well under way, the term was still frequently used to refer to the site, as when opponents of the [[Park51]] project that was to be located two blocks away from the site labeled it the "[[Ground Zero mosque]]".

In advance of the 10th anniversary of the attacks, New York City mayor [[Michael Bloomberg]] urged that the "ground zero" moniker be retired, saying, "…the time has come to call those {{convert|16|acre|ha|abbr=off|disp=sqbr|round=0.5}} what they are: The World Trade Center and the National September 11th Memorial and Museum."<ref>{{cite web |url=https://www.bbc.co.uk/news/magazine-14827694 |title=Is it time to retire 'Ground zero'? |publisher=BBC |author=Geoghegan, Tom |date=2011-09-07 |access-date=2011-09-10}}</ref>