We are hard - wired to react with fear to what we do n't know , Grant says . He says there is a fear overload and a shortage of fear . Officials in Washington have told people that radiation levels pose no threat to them . A caveat : this emergency is in uncharted territory .
We are hard-wired to react with fear to what we do n't understand , Grant says . Expert says there is a fear overload and a shortage of fact . Officials in Japan have told people that radiation levels pose no risk to health . A caveat : this emergency is in uncharted territory .