World Trade Center
It's been nearly 13 years since 9/11, but first responders, volunteers and other cleanup workers are still getting ill because of working in the toxic environment. That's why officials said it's necessary for any person involved in cleanup or rescue after 9/11 and in the surrounding areas to register for workers' compensation benefits.
A change to the design of a needle that will sit atop One World Trade Center is raising questions over whether the building will still be America's tallest when completed.
Change to Top of 1 WTC Raises Questions About Height North Carolina National Guide, flickr