When did daylight savings time start? It started in Canada in 1908. Daylight savings time is the practice of putting the clocks forward by one hour in the summer and back in the winter. The reason for this is to give people more sunlight throughout the year as the length of the day changes with
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How do some plants move? There are three ways that plants move. Plants can move to face the sun or to move into sunlight. Plants can move when touched or stimulated in some way. And plants can move to find a structure to wrap around. Each type of movement has a different mechanism. Let’s look
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Are any plastics biodegradable? Some are, but most aren’t. It depends on what they are made from and how they are made. Most natural materials biodegrade once they are dead. Inside the cells of the dead material are polymers, which are chains of small molecules strung together. Bacteria and other organisms break down the cell
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What is peat? Peat is a layer of partly decomposed organic matter on the surface of a soil. It has a high water content and a low oxygen content. Accumulations of peat are called peatlands and they are found in 180 countries worldwide, in different quantities. The highest concentrations are in northern Europe, northern
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What is your risk of dying every year? It depends on your gender, age, race, where you live, and so many other factors, but it is possible to make a rough estimate of your chances of dying at every age. A person’s statistical risk of dying at every age is useful knowledge for governments, the
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When we think about important figures in the history of aviation, Orville and Wilbur Wright obviously spring to mind. However, they probably wouldn’t have been able to fly without the work of Otto Lilienthal, a German aviator, who was known as the flying man. Lilienthal wasn’t the first person to build heavier than air flying
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Why are tennis scores so peculiar? Nobody seems to know the answer, although there are several theories. Tennis has a very illogical scoring system. Both players start on zero, which is called love. From there, the points go to 15, then 30, then 40. If a player on 40 scores one more point, they win
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What is the difference between bees and wasps? There are many differences. Some of them are what they eat, where they live, how they sting, and how hairy they are. There are many more differences. This is not an easy question because there isn’t just one type of bee and one type of wasp. There
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Why do we have ears on the sides of our head? Because of the position of our brains and our spines, because it puts the most possible distance between each ear, because we rely on sight more than sound, and because we are not prey animals and we don’t hunt by stealth. Our ears are
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What game has the best odds in a casino? Blackjack has a 49% chance of winning, which is the best odds you will find in a casino. There are a lot of casinos in the world, although they are illegal in some countries, such as China. China gets around the law by allowing them on
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