Science magazine for children: Packed with science stories, science facts, science features, and other science learning resources for children. Discover the known, the unknown, and little-known facts in our science articles. Learn the how and why of everyday things and explore rare and exotic living species.
358 items in this section. Displaying page 34 of 36
Dangerous Red Tide in HongKong
Sea beaches around HongKong have a problem. They regularly face the threat of a ‘Red Tide’. The ‘Red Tide’ kills fish in sea farms and in the open seas. Actually, the ‘Red Tide’ is reddish brown algae that floats on water near the coastline. It enters the gills of the fish swimming about in the sea and kills them. The gills are like noses of the fish. They help the fish breathe. When the algae enters the gills, it creates havoc....
Pelican Trouble
Many people living in Andhra Pradesh may have escaped the wrath of the cyclone that ravaged the state last month, but the migratory pelicans, in a small costal village in northern Andhra, weren’t quite as fortunate. Pelican Trouble [Illustration by Shiju George] The storms’ heavy winds and rains didn’t cause as much material damage as was expected, however it proved disastrous for the pelicans as small chicks were blown out of their nests....
Seasons in a Tree’s Rooted Life
Seasons in a Tree’s Rooted Life [Illustrations by Kusum Chamoli] You may be very proud of the fact that the orange tree in your garden only comes up to your shoulders, but that is just one part of the tree that you see. Sometimes a tree’s roots, beneath the soil, are much bigger than the parts you see above the ground. It is with these roots a tree looks for water that gives it life, and makes its leaves look shiny, bright and healthy....
The Tree is an Invisible Heater
Have you ever noticed that bare winter tree in your garden, in the park or in school? Without leaves the tree looks so cold and dry, but surprise of surprises, it keeps the grass below warm. So much so that the tiny blades never get any frost on them. In contrast, grass in parks without trees to protect them are usually in white frosty disguise in winters. Why is that so? You would never believe it but that leafless tree acts like a heater to the grass below....
Paris is Bugged by Termites!
Recently Parisians have been facing quite a bit of trouble; bookshop owners live in mortal terror of their precious books disintegrating, while owners of wooden houses are constantly worrying that their homes might collapse into a pile of rubble. Strangely enough, the cause of all this problem is really teeny. In fact the culprit that has most of Paris, France, upset is able to squeeze through an opening as small as 1/32 of an inch! Not so terrifying after all, but then these creatures live in gigantic colonies – consisting of more than a million members and love munching on wood and paper....
Mr Fly Rubs his Hands with Glee
Have you seen a housefly rubbing its hands together? It is almost as if it were washing its hands. It actually is. Not with water though. When the housefly rubs its hands together, it is cleaning them. And, if you have the food it has cleaned itself on, you are in for a bad time. Nothing can save you from a bout of diarrhoea or dysentery after that. Mr Fly Rubs his Hands with Glee [Illustration by Shridevi] The whole body of the housefly, including claws and padded feet, is covered with sharp hairs....
Cigarette Packs that Talk
Cigarette smoking is injurious to health – everyone knows that. Well, till a few decades ago, people were unaware that smoking could cause lung and heart diseases and cigarette packs never had a warning on them, like they do now. In recent years, research has shown that smoking is dangerous and it has now been made compulsory for all cigarette manufacturers to have what is known as, a ‘statutory warning’ printed on the cover. It states that ‘cigarette smoking is injurious to health’....
Rocky Planet of Fire and Ice
Would you believe it? The soft sand that we sink into on the beach is actually rock? Sand is what a rock becomes after years of being worn down by rivers. Years of sea waves crashing against huge rocks and cliffs makes rocks break into small particles. And ultimately, they end up as sand. The colours of sands — yellow, red, grey, black — depend on the kind of rock it comes from. Sometimes desert sand is carried by winds across great distances, to seasides, increasing the amount of sand in the sea....
High-tech Crane Migration
As winter sets in, millions of birds leave their nests in the northern hemisphere and head towards warmer lands in the south. During spring, they once again wing their way back to their original nesting grounds. This yearly ritual is known as migration. While some birds are great travellers, flying from one country to another; others merely flap down from the high mountains to sheltered valleys for the winter. The Arctic tern (of North America) is the hardiest traveller of all....
In a Minute
In a Minute [] There’s a flower found in the jungles of Africa that changes its colour seven times in one minute! It is known as the ‘Rainbow’ by the people there. Light travels a distance of 18,00,00,000 kilometres in one minute, which means 30,00,000 kilometres in a second! There’s a fish found in the waters of the Amazon river which can gulp down 250 fish, big and small, in one minute!...