september 11

There were a lot of heroes on and after 9/11, and as the the Kennel Club reminds us, not all of them were bipedal. Now, one of those courageous canines has been brought back to life through cloning.

Trakr, a German shepherd who assisted with search and rescue in the rubble of Ground Zero, died in April. However, Trakr's DNA was saved, and BioArts International produced five clones of the dog. Yesterday, the clones were presented to James Symington, the Canadian police officer who led Trakr through the wreckage of the World Trade Center.

The future of secure travel hinges on seamless, instant communication-and 24/7 autonomous surveillance. For a look at the technologies that will soon safeguard your travel plans, launch the photo gallery.

Nearly five years after September 11, the airline industry is finally adopting new in-flight technologies to keep planes safe from terrorists. With $110 million in grant money from the U.S. Department of Homeland Security, the Federal Aviation Administration is currently in the process of certifying two antimissile systems designed for commercial airliners. The technology uses infrared sensors to detect and track incoming missiles, then fires a laser beam to jam a heat-seeking missile´s infrared guidance system.