Author Archives

Anu

Why are there different languages?

Researchers can only guess when humans first began forming sounds into words to communicate thoughts (there certainly weren’t any books to record the invention of language). Ancestors of the humans species possessed the mouth and throat parts necessary to pronounce words nearly two million years ago, but they likely didn’t […]

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Why is Earth the only planet with life?

Not so fast,Earthling ! Outer space is a big place, and one thing scientists have learnt from studying life on Earth is that organisms can thrive in all sorts of harsh environments. Meanwhile, astronomers have discovered nearly 4,000 Earth like planets beyond our solar system and are spotting more everyday. […]

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Why do we sneeze?

Sometimes dust, flakes of dead skin, pollution, microbes, or your own booger build up from a cold find their way into your nose’s passages. When mucous membranes in the lining of your nose detect this intruders, they sent an urgent message to your brain : Unleash a sneeze ! How […]

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What are germs?

The term “germ” encompasses an army of tiny terrors, including viruses, fungi, parasites, and bacteria. These “pathogens” all have the ability to spread from victim to victim(called a host). Germs are so small you can see them only through a microscope. They look like spiky blogs, oozing spirals,hairy hotdogs, or […]

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Why do we have 10 fingers?

Scientists have several ideas why humans can high-five each other instead of, say, high four or high six. One theory suggests four fingers and a thumb on each hand are the perfect number and length to grip objects firmly. (Another study suggests we can gasp most things with just our […]

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Why do we yawn?

Everybody yawns – even unborn babies in the womb – and yet researchers are not quite sure why we do it. Although humans yawn more often when we are tired or bored, scientists have ruled out sleepiness or lack of oxygen ( which would cause sleepiness) as causes. Instead, they […]

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Why can I survive without all my organs?

It is a no-brainer that you need your brain and your heart, hurtand you wouldn’t last long if your liver failed. But the lungs and Kidneys come in pairs, so you could survive if one of them failed. People who have lost their spleens in accidents have gone on to […]

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Habitats

Animals, plants, and all living things are adapted to life in their natural surroundings. These different environments are called habitats. Every living species on Earth has its own favoured habitat, which it shares with others. These different species interact with their natural environment – be it cold or hot, wet […]

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The Dinosaurs

For 165 million years, life on earth was dominated by the most spectacular animals that have ever existed – the dinosaurs. The Mesozoic Era was a high point in the history of life, because it was the age of dinosaurs. This fantastic creatures included the biggest, heaviest, and the most […]

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Earthquakes

A Natural part of our planet’s workings, earthquake can be terrifying and destructive events. Some trigger powerful Ocean waves called tsunamis. Earth’s outer shell is made up of huge slabs called tectonic plates. These plates are constantly moving, and push past each other with hard jerky movements. In some places, […]

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