In this online interactive English vocabulary skills worksheet, high schoolers answer 10 matching questions which require them to fill in the blanks in 10 sentences. Students may submit their answers to be scored.

What happens when a nuclear reactor overheats? This video segment adapted from FRONTLINE looks at the nuclear reactor meltdown at Chernobyl, the worst accident of its kind.

The companion site to a NOVA program on the role of submarines in the Cold War, this site provides a close-up view of life on a nuclear submarine. In addition, the transcript of the program is available, which details some of the ways...