D.s in physics, chemistry or nuclear engineering.

FORBES: Obama Supports Iranian Nuclear Power, Not Ours

On the strength of Erector's success, Gilbert branched out into microscopes, chemistry sets and a nuclear science kit containing a small sample of radioactive material.

FORBES: Life

On the strength of Erector's success, Gilbert branched out into microscopes, chemistry sets and a nuclear science kit, which contained a small sample of radioactive material.

FORBES: Global Life

When there are worries about nuclear safety - such as following the tsunami in Japan - the Royal Society of Chemistry fears that the public reaction is still shaped by such emotive, negative associations.

BBC: James Bond villains blamed for nuclear's bad image