“… the degradation of infrastructure could have irreversible effects on the country’s ability to support its population.”
Dr. William R. Graham, former Science Advisor to the President and
NASA Deputy Administrator in Congressional Testimony
President Obama warns about the vulnerability of nuclear materials
"US President Barack Obama said there are 'still too many bad actors' in the world trying to get their hands on nuclear material, which could result in a terror attack that kills large numbers of people..."