nuclear safety

Some of my best memories are of the times I spent hiking and camping with my family as a child, Boy Scout, and on leave from the Navy.  I have great memories of swimming in rivers, lakes, and ponds; running for the park rangers when bears invaded our campsite, of watching the sunset over the ocean (or rise over the rim of a canyon).    What bothers me is that today, so many of these things can no longer be enjoyed.