The science behind lightning

Lightning and Atmospheric Electricity Research and lightning primer (NASA)

Red Sprites and Blue Jets (University of Alaska)

Safety/Awareness

National Lightning Safety Institute

Thunderstorms and Lightning: The Underrated Killers (NOAA; Web version courtesy American Red Cross, Nassau County, NY.)

Lightning Injury Home Page (University of Illinois at Chicago)

Kid-friendly sites

NCAR Lightning Exhibit

Sabrina's Lightning Information and Safety for Kids (Anubis Productions)