The Aqua Lung® is a device for breathing underwater invented by Jacques-Yves Cousteau and Emile Gagnan in the 1930s. It uses open-loop technology and is still used in the military and diving communities. After the patent expired, US Divers purchased and trademarked the device. The United States Army has used Aqua Lung® technology for nearly […]
Horse riding lessons focus on the rider’s skills, with judges observing form and communication between horse and rider. Calm, well-trained horses are preferred, and riders can use English or Western tack. Equestrian training builds a relationship between horse and rider, encouraging good manners and responsiveness. Horse riding is the art of riding a horse. In […]
The Seven Summits are the highest peaks on each continent, with Mount Everest being the tallest. Only experienced climbers should attempt them. The list includes Kilimanjaro, Denali, Elbrus, Aconcagua, Puncak Jaya, Vinson Massif, and Mount Everest. Some climbers move on to the Second Seven Summits. The Seven Summits are the highest peaks on all seven […]
Counting chips is important in poker, but it should be done quickly and without slowing down the game. Organizing chips in even stacks can help. “Reducing,” or removing chips from the table, is considered bad etiquette. Cash in winnings only after the game is over. When playing any variation of poker, you should always have […]
Rollerblade is the most popular brand of inline skates, often used interchangeably with the sport’s name. Before buying, consider the type of skating you’ll do. Multipurpose skates are best for recreational use, while aggressive skates are for tricks. Cost and protective gear should also be considered. Rollerblade is actually the most popular brand name of […]
A wax comb is a tool used to texturize or remove wax from a surfboard. It has teeth on one edge and a flat surface on the other. It can be used to scrape long lines into the wax or remove wax from the board. Multifunctional wax combs may have additional tools like a wrench […]
Varsity teams are made up of the strongest players in college and high school, while junior varsity consists of less experienced players. Some schools hold sporting events for both levels, while others have junior college players as backups. Some students are immediately good enough for varsity, while others use junior college as a proving ground. […]
A pitcher can commit a balk in baseball by making an illegal pitch before or during a pitch. This allows all runners on base to advance to the next base without being challenged. Common ways to balk include arm or foot motions in any direction other than home plate, and not reaching the set position […]
The playoff beard is a tradition among North American sports teams, especially in the NHL, where players don’t shave during postseason contests for good luck. It started with the 1980 New York Islanders and has become a ritual among most NHL teams. Fans also grow playoff beards to show support and sometimes for charity fundraising. […]
Paintball is a game where people shoot each other with guns that shoot paintballs. It began in the 1980s and quickly became a legitimate sport. Players use specially set up fields and equipment, and referees ensure safety. It is now a popular sport with equipment available at most sporting goods stores. Paintball is a combo […]
Hydrogen rockets use hydrogen and oxygen as propellant, releasing energy when ignited. The reaction is efficient and used in space launches, but hydrogen must be kept in liquid form. Model rockets on Earth use the same concept, but don’t need to carry oxygen. Simple experiments can illustrate the power of the reaction. A hydrogen rocket […]
Casinos use advanced security to catch suspicious players and cheats. Card counting is a proven method to beat the odds, but requires skill and patience. Roulette is a game of luck, but spreading bets across many numbers can help. Some have successfully cheated, but casinos are getting better at catching them. Recently, a group used […]
Tai Chi walking is a gentle exercise that improves posture and gait while focusing on the act. It can be practiced alone or combined with other aspects of Tai Chi practice. It requires no additional equipment and is suitable for people of all ages and levels of physical ability. The gait is slow, flowing and […]
The Marquess of Queensberry Rules are the modern amateur and professional boxing rules, developed in 1867 by John Graham Chambers and sponsored by John Sholto Douglas. They replaced the London Prize Ring rules and made professional boxing legal in England. The rules emphasize technique and skill and regulate the game and logistics of the fight, […]
Bird calls are vocalizations used by birds to identify themselves and communicate with others. They can be formed by the syrinx or mechanically, and can be used for mating, warning, or maintaining contact. Bird calls are used for identification and research, and some birds can mimic other species’ calls. Hunters use bird calls to lure […]
Knitting with plastic bags is easy and can create a variety of projects, from purses to sun hats. Different weights of yarn can be obtained by cutting bags in varying widths and techniques. This technique helps reduce plastic bag waste, and projects can include shopping bags, coats, and bathroom rugs. Inspiration can be found on […]
Sun Salutation is a series of yoga poses that warm up the body and increase muscle flexibility. It’s used to honor the sun and bring its power into the heart. Pregnant women, those with hernias, and acute back problems should consult a doctor before attempting it. The goal is to move between each pose with […]
Stabilizers are boats with a secondary hull that provide stability and are used for sailing and rowing. They were originally developed in the South Pacific and continue to be an important part of Polynesian life. Outriggers can also be used to secure masts or sails and are commonly used in outrigger canoe races. A stabilizer […]
Duck Duck Goose is a chase game played by at least four players. One player taps others on the head or shoulder, calling them ducks until they say goose. The goose chases the player who is It, trying to tag them before they sit in the goose’s spot. If the player who is It sits […]
Laos is a Southeast Asian country with a rich history, including the formation of the Kingdom of Lan Xang in the mid-14th century and French colonization in the 19th century. The country struggled for independence and neutrality during the Vietnam War, eventually falling to Communist control. Laos is known for its natural beauty and traditional […]
