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Smoke is the collection of airborne solid and liquid particulates and gases emitted when a material undergoes combustion or pyrolysis, together with the quantity of air that is entrained or otherwise mixed into the mass. It is commonly an unwanted by-product of fires (including stoves, candles, oil lamps, and fireplaces),but may also be used for pest control (cf. fumigation), communication (smoke signals), defense (smoke-screen) or smoking (tobacco, marijuana, etc.)...

A robot is an automatically guided machine, able to do tasks on its own. Another common characteristic is that by its appearance or movements, a robot often conveys a sense that it has intent or agency of its own. The word robot can refer to both physical robots and virtual software agents, but the latter are usually referred to as bots...

The tiger (Panthera tigris), a member of the Felidae family, is the largest of the four "big cats" in the genus Panthera. The tiger is native to much of eastern and southern Asia, and is an apex predator and an obligate carnivore. The larger tiger subspecies are comparable in size to the biggest extinct felids, reaching up to 3.3 metres (11 ft) in total length, weighing up to 300 kilograms (660 pounds), and having canines up to 4 inches long...

Canadian Lisa Murphy, the author of the book Tactile Minds, sells each copy for $230. The book has 17 raised images, i.e. woman with "perfect breasts" and woman in a "disco pose". Between 1970 and 1985 Playboy printed copies of its famous magazine in braille...

Songkran originally was celebrated only in the north of Thailand, and was probably brought there by the Burmese, who adapted it from the Indian Holi festival. It spread across Thailand in the mid 20th century and is now observed even in the far south. However, the most famous Songkran celebrations are still in the northern city of Chiang Mai, where it continues for six days and even longer...