Early sunglasses served a special purpose and it wasn't to block the rays of the sun. Smoke tinting was the first means of darkening eyeglasses, and the technology was developed in China prior to 1430. These darkened lenses were not vision-corrected, nor were they initially intended to reduce solar glare. For centuries, Chinese judges had routinely worn smoke-coloured quartz lenses to conceal their eye expressions in court. A judge’s evaluation of evidence as credible or mendacious was to remain secret until a trial’s conclusion. It wasn't until the 20th century that modern-type sunglasses came to be. In 1929, Sam Foster, founder of the Foster Grant company sold the first pair of Foster Grant sunglasses on the Boardwalk in Atlantic City, NJ. By 1930, sunglasses were all the rage.

- On the Australian coat of arms the Emu and the Kangaroo were selected as symbols of Australia to represent the country progress because they are always moving forward and never move backwards. - The adult male Kangaroo is called buck, boomer or jack. - Adult females are called doe, flyer or jill. - Young kangaroos are called joeys - A group of kangaroos is called a mob, troup or court. - "Roos" is a colloquial name used for any kangaroos or wallabies. - Most people think kangaroos are endemic to (live only in) Australia. In fact, several species of tree kangaroos and forest wallabies also live in Papua New Guinea. - Feral populations of some kangaroo species have been introduced to Hawaii, Great Britain and New Zealand. - At least six species of macropods have become extinct since Europeans arrived in Australia. Several more are endangered. - The Red Kangaroo is the largest living marsupial and can grow to two metres (!). It weighs up to 90 kg (200 pounds). - Top speed: over 60 km/h (close to 40 mph). A Red Kangaroo can leap eight metres far (25 feet) and three metres (10 feet) high! - (If it wants to. At normal hopping speed they would cover more like 1.5 - 2 metres or 5 - 6 feet in a leap, at a speed of about 25 km/h or 15 mph.) - Kangaroos are the only large animals that move by hopping. - They cannot move backwards. - Hopping is a fast and energy efficient method of travel, designed to cover huge distances in a land that offers little food or water. - Odd kangaroo fact: on land kangaroos can't move their hind legs independently, only together. But when they are swimming (they are good swimmers) they kick each leg independently. - All marsupials have a pouch in which their young live, drink milk and develop until they are big enough to face the world.

- Australia is the largest island in the world - In land area, Australia is the sixth largest nation after Russia, Canada, China, the United States of America and Brazil. It has, however, a relatively small population. - Australia is the smallest of the world's seven continents - Each and every part of Australia is within a distance of 1000km from ocean or a beach. - Australia is the only nation to govern an entire continent and its outlying islands. The mainland is the largest island and the smallest, flattest continent on Earth. It lies between 10° and 39° South latitude. - The beer Fosters is the most common beer drank outside of Australia. Inside Australia it's the least common. - Australia has nine sheep for every one person