After World War II ended, the Superfortress airplanes known as the B-29 took on many new jobs. No longer needed as bombers, many of these bombers were converted into specialized aircraft, performing the tasks of in-flight refueling stations, weather research and reconnaissance.
Seashells come in various shapes and sizes. And it appears that the seashells from the tropics tend to be larger than those found in the temperate regions.
Far from being just a coincidence, it seems that there is a rational explanation for it. Simply put, this is because the sea snails in the tropics have to devote relatively less energy to shell growth, compared to those in the cold-water regions.
Last summer, Lamar Hires, Dive Rite's CEO, joined a group of like-minded divers from Rango Extendido to explore Silfra. This is Iceland's infamous fissure, where you can dive in the crack between two continental plates and simultaneously touch North American and Eurasian.
Diving instruction has standards, qualifications, materials, governing bodies and best practices. So why do we see such poor examples of diving practice? Why do so many new divers struggle with basic skills? Why do tech divers forget some key techniques? Is it poor instruction or something else?
