These maps show how Earth’s land and sea looked in the past. To fit everything on them, Earth has been drawn as an oval. For a long time, all land was joined together in one giant mass. Over millions of years it broke up into smaller pieces. They turned into today’s continents. Is it true? […]
How old is the Earth
Earth is millions and millions of years old. In fact, our planet is four thousand six-hundred million years old. When the Earth’s age (4.6 billion years) is written as a number, it looks like this: 4,600,000,000. It’s hard for us to imagine anything so old. Has there always been life on the Earth? Nothing […]
Pollution is one of the major threats to the environment
Pollution is one of the major threats to the environment. It must be reduced. People must use vehicles and automobiles run on eco-friendly fuels. Harmful gases mix with the air surrounding us and produce acid rain. We must also avoid dumping of harmful chemicals in water bodies. It affects the animals that live in them […]
How will you feel if someone destroys your home
How will you feel if someone destroys your home? Human beings who are so particular about their shelter and belongings do not think even once before destroying the natural habitats of wild species. They must take a pledge to protect the world’s flora and fauna. We should protect the natural habitats of wildlife. This will […]
With hotels and airports coming up at beaches
In the last 30 years, about 85 percent of the world’s rhinoceroses have been killed by the poachers. With hotels and airports coming up at beaches, birds and reptiles that nest on beaches are disturbed by the noise and bright lights. Monk seals are some of the rarest seals in the world. There are less […]
Desertification is defined as the spread of deserts all over
Desertification is defined as the spread of deserts all over. It is one of the major threats to the environment. It is the outcome of the activities of the people living on the outskirts of deserts. These activities include grazing of animals and cutting down of trees for building. Desertification is particularly a big problem […]
Species of plants and animals are becoming extinct at a much faster rate
Species of plants and animals are becoming extinct at a much faster rate today than they did perhaps a couple of centuries ago. Some of the reasons are destruction of their habitats, pollution, poaching and illegal collection of rare species. Making an estimate of how fast the species are dying out is slightly difficult but […]
The ozone layer exists about 15-50 kilometers above the Earth
Global warming is the result of burning fuels. When we burn oil, coal or wood, greenhouse gases like carbon dioxide and methane, are released into the atmosphere, which rise upwards and create a blanket around the Earth. Short-wave radiation from the Sun can pass through the blanket. But the long-wave radiations from the Earth cannot […]
Global warming is the result of burning fuels
Global warming is the result of burning fuels. When we burn oil, coal or wood, greenhouse gases like carbon dioxide and methane, are released into the atmosphere, which rise upwards and create a blanket around the Earth. Short-wave radiation from the Sun can pass through the blanket. But the long-wave radiations from the Earth cannot […]
Pollution is defined as the contamination of land, air or water
Pollution is defined as the contamination of land, air or water. The invention of advanced vehicles and automobiles has led to air pollution. Fumes from traffic are responsible for releasing over 225,000 tonnes of lead into the atmosphere every year. Lead is harmful for humans and animals. Harmful factory wastes dumped in the water bodies […]