How Long Have Dragonflies Been Around?
Dragonflies have been around a really long time. Experts believe they existed over 300 million years ago. Dragonflies can be found all over the world. In fact, there...
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How Did the Term “OK” Start?
How Did the Term “OK” Start? There have been several theories as to the origin of the popular term “O.K.,” used worldwide to indicate approval....
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What Is a Stinging Nettle?
What Is a Stinging Nettle? A stinging nettle is one of a group of plants that have stinging bristles. They are coarse herbs found in the northern temperate regions....
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What Causes Black and Blue Marks?
What Causes Black and Blue Marks? If you fall or receive a sharp blow, you may get a painful bump that soon turns black and blue. When you bruise yourself, tiny blood...
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What Is a Gazebo and What Is It Used For?
What Is a Gazebo and What Is It Used For? A gazebo is a freestanding, open garden structure, sometimes hexagonal or octagonal in shape, with a roof. Most gazebos are...
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How Are Stars Formed?
A star like our sun is born inside a huge cloud of gas and dust. A globe of space matter grows as it sweeps up surrounding matter by gravitational attraction. As the...
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What Are Sun Dogs and How Do They Form?
What Are Sun Dogs and How Do They Form? The bright, colored areas of light beside the Sun are known as sun dogs (sundogs). They’re often approximately 22 degrees...
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How Do Bananas Grow?
How Do Bananas Grow? Bananas grow on tall plants that are often called trees. But they are not real trees, because they don’t have a woody trunk. What looks like...
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When Can a Rainbow Be Seen?
When Can a Rainbow Be Seen? After a shower of rain there is often a rainbow. Rainbows form when the sun begins to shine through the clouds while the air is still filled...
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Why Can’t We See the Stars in the Daytime?
Why Can’t We See the Stars in the Daytime? The stars are shining all the time, day and night. We cannot see stars in the daytime because the sun is so bright. In all...
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