Nuclear researchers suspect that there are nearly 4,000 undiscovered nuclei that may help lead us to new machines and practices that benefit human life.
At the Los Alamos National Laboratory in New Mexico, workers are still waiting for answers about who is liable for sicknesses they say were caused by radiation from the lab.
A study of nursing homes near the nuclear site suggest the physical and mental stress of evacuation took more years off people's lives than radiation will.