Parents are looking for fun activities to keep kids occupied through quarantine. Thankfully, it’s not hard (or expensive) to turn an underwater flashlight craft into a fun little game that children ...

We decided to use a light bulb as the basis for our underwater flashlight. The concept of the light bulb is quite simple. An electric current flows through the filament from the source. The filament ...

National Geographic Explorer David Gruber was studying coral while diving at dusk off an uninhabited volcanic island in the South Pacific in 2013 when fellow explorer Brennan Phillips swam up to him ...