Which Are the Most Widely Practiced Religions In the World and How Many Christians Are there In the World?

which are the most widely practiced religions in the world and how many christians are there in the world

The top three religions in the world are Christianity, Islam, and Buddhism. Together, about half the world’s people follow the beliefs and teachings of these religions. Islam is the fastest growing of the three. Christianity has the most followers, nearly 2 billion, and they live mainly in North America, South America, and Europe. About half … Read more

Which Country Is the Worst Air Polluter In the World and How Much Carbon Dioxide Does the U.S. Produce?

which country is the worst air polluter in the world and how much carbon dioxide does the u s produce scaled

The United States is the worst air polluter in the world, responsible for one-fourth of all carbon dioxide emissions. Carbon dioxide emissions result from burning fossil fuels, such as gasoline, oil, natural gas, and coal. China is the world’s second worst air polluter, accounting for 12 percent of carbon dioxide emissions, followed by Russia, Japan, … Read more

Which Country Consumes the Most Electricity In the World and How Much Electricity Does the U.S. Generate?

which country consumes the most electricity in the world and how much electricity does the u s generate

The United States tops the list of countries that consumes the most electricity in the world. It generates and consumes about one-fourth of all the electricity worldwide. China is second, consuming about one-tenth of the world’s electricity, followed by Russia, Japan, Germany, India, and Canada, in that order. In 2009, global electricity consumption was cut … Read more

Why Is Global Warming Considered To Be a Bad Thing and How Does Global Warming Affect Food Production?

why is global warming considered to be a bad thing and how does global warming affect food production scaled

One of the biggest concerns about global warming is that higher temperatures could affect food production in many parts of the world. Many crops need certain temperature ranges to grow properly. Food shortages and famine could result. Also, if warmer temperatures cause polar ice to melt, sea levels could rise and lead to flooding in … Read more

Which Parts of the World Are Growing the Fastest In Population and Why Are Growth Rates Higher In Asia?

which parts of the world are growing the fastest in population and why are growth rates higher in asia

Almost all of the world’s rapid population growth, about 99 percent, is happening in poor, less developed countries in Africa, Asia, and Latin America. Many sociologists speculate that this population growth is due to a lack of education and practice in birth control methods in these regions. About 4.9 billion of the world’s 6.1 billion … Read more

Which Parts of the World Are Growing More Slowly In Population and Why Is Population Growth Shrinking?

which parts of the world are growing more slowly in population and why is population growth shrinking scaled

Many countries in Europe, including Italy, Germany, and Russia, are actually losing population because women there are having fewer children than ever before. Japan is also shrinking in population. The United States would be growing more slowly if it weren’t for immigration, people moving there from other countries. This is also true for Australia, New … Read more

Which Countries In the World Are Growing the Fastest In Population?

which countries in the world are growing the fastest in population scaled

Just six countries account for all the world’s annual population growth of about 77 million people each year: India, China, Pakistan, Nigeria, Bangladesh, and Indonesia, in that order. Indonesia is the fourth most populous country in the world, and has the world’s largest population of Muslims. The Indonesian archipelago has been an important trade region … Read more

What Are the Largest Cities In the World In Population and How Many People Lived In the Biggest Cities?

what are the largest cities in the world in population and how many people lived in the biggest cities

What Are the Largest Cities In the World In Population and How Many People Lived In the Largest Metropolitan Areas? The list below gives the populations of the largest metropolitan areas, including the central city and its surrounding areas, in 2000. Tokyo, Japan 33.1 million New York City, United States 21.1 million Seoul-Inchon, South Korea … Read more

What Were the Largest Cities In the World In Population 1,000 Years Ago and How Many People Lived In Japan?

what were the largest cities in the world in population 1000 years ago and how many people lived in japan

The world in the year 1000 was much smaller and quite different from the world today. The list below shows the world’s biggest cities, and their estimated populations, at that time: Cordova, Spain 450,000 Kaifeng, China 400,000 Constantinople (Istanbul), Turkey 300,000 Angkor, Cambodia 200,000 Kyoto, Japan 175,000 Cairo, Egypt 135,000 Baghdad, Iraq 125,000 Nishapur (Neyshabur) … Read more

How Much of the World’s Forests Have Disappeared and How Much Forest On Earth Is Destroyed Every Day?

how much of the worlds forests have disappeared and how much forest on earth is destroyed every day scaled

More than half the forests that covered the earth 8,000 years ago are gone today. They’ve disappeared mostly because of human activities. For many hundreds of years, people have used wood for fuel and for building material. Millions of trees were also cut down and cleared away to create farmland. Some scientists estimate that the … Read more

How Many Countries Are There In the World Today and How Many Countries Are Members of the United Nations?

how many countries are there in the world today and how many countries are members of the united nations

The number of countries in the world today depends on how the word “country” is defined. According to the U.S. State Department, there are 192 independent countries, if Taiwan is included. The problem is that China claims that Taiwan is a Chinese province, whereas Taiwan insists that it is an independent country. The United Nations … Read more

How Far Do a Country’s Boundaries Extend and How Far Up Into the Atmosphere Does the Air Space Extend?

how far do a countrys boundaries extend and how far up into the atmosphere does the air space extend scaled

Borders define geographic boundaries of political entities such as governments, sovereign states, and other subnational entities. A country’s borders continue beneath the surface all the way to the earth’s core. Above the ground, boundaries extend 100 miles (161 km) into the atmosphere. That means that airlines must get permission to enter the air space of … Read more

Which Countries Have the Most Neighbors On Their Borders and How Many Neighbors Do China and Russia Have?

which countries have the most neighbors on their borders and how many neighbors do china and russia have

China and Russia border the most other countries, mainly because they both cover such large land areas. Each country has 14 neighboring countries. Russia’s borders touch Azerbaijan, Belarus, China, Estonia, Finland, Georgia, Kazakhstan, Latvia, Lithuania, Mongolia, North Korea, Norway, Poland, and Ukraine. China is bordered by Afghanistan, Bhutan, India, Kazakhstan, Kyrgyzstan, Laos, Mongolia, Myanmar, Nepal, … Read more

Where Did the Deadliest Earthquake In the World Occur and Why Did So Many People Die In the Earthquake?

where did the deadliest earthquake in the world occur and why did so many people die in the earthquake

A terrible earthquake struck central China in 1556, killing about 830,000 people. Most died because they were living in caves made of soft rock, called Loess caves, which collapsed during the quake. More than 97 counties in the provinces of Shaanxi, Shanxi, Henan, Gansu, Hebei, Shandong, Hubei, Hunan, Jiangsu and Anhui were affected by the … Read more

What Was the Most Powerful Earthquake Ever Recorded In History and What Was the Second Biggest Earthquake?

what was the most powerful earthquake ever recorded in history and what was the second biggest earthquake

A 1960 earthquake in southern Chile, along the coast of South America, had a magnitude of 9.5, and was the most powerful earthquake ever recorded. The earthquake caused a tsunami, or huge wave, which destroyed several fishing villages on Chile’s coastline and then raced across the Pacific Ocean. It struck Hilo, Hawaii, 14 hours later … Read more

What Was the Biggest Volcanic Eruption In the World and How Many People Died When Mount Tambora Erupted?

what was the biggest volcanic eruption in the world and how many people died when mount tambora erupted

Mount Tambora’s 1815 eruption was the largest volcanic eruption in recorded history, and the deadliest in the world. The Tambora volcano in Indonesia killed about 90,000 people in 1815. Most of the victims died of starvation and disease after the eruption. Crops and livestock were destroyed and the water became contaminated, leading to disease. 1816 … Read more

How Many People Have Died From Volcanoes In the Past 500 Years and How Do Volcanoes Affect Life On Earth?

how many people have died from volcanoes in the past 500 years and how do volcanoes affect life on earth

At least 300,000 people worldwide have died as result of volcanic activity since 1500, and many more lost their homes. Scientists estimate that volcanoes pose a risk to about 500 million people today. It has been suggested that volcanic activity contributed to the Permian-Triassic and Late Devonian mass extinctions, among others. One of the largest … Read more

How Many Times Does Lightning Strike Around the World Each Day and How Hot Is a Bolt of Lightning?

How Many Times Does Lightning Strike Around the World Each Day

Lightning strikes the earth and other objects around it more than 8.6 million times a day, or about 100 lightning strikes every second. Lightning is a discharge of electricity in the atmosphere accompanied by thunder. It usually occurs during thunderstorms, but can sometimes occur during volcanic eruptions or dust storms. A leader of a bolt … Read more

Is the Pull of Gravity the Same All Over the Earth and How Much Less Do You Weigh off the Coast of India?

is the pull of gravity the same all over the earth and how much less do you weigh off the coast of india scaled

The pull of gravity is not quite the same everywhere on earth. Although gravity is relatively the same everywhere, there are small variations. These are due to differences in density in the earth’s mass. Scientists have recently discovered, with the help of two earth-orbiting satellites, that the pull of gravity is slightly less off the … Read more

Who Owns the Oceans of the World and How Are the Waters Surrounding the Coastline of a Country Important?

who owns the oceans of the world and how are the waters surrounding the coastline of a country important

Countries don’t actually own the waters that surround them, but for centuries countries have claimed that certain distances off their shores belong to them. The usual distance was about 3 nautical miles. A nautical mile is equivalent to about 1.15 land miles, or 1,852 meters. The waters off a country’s coastline are important not only … Read more

What Is the Continental Drift Theory and How Did Pangaea Break Up Into Pieces and Form the Continents?

what is the continental drift theory and how did pangaea break up into pieces and form the continents

According to the theory of continental drift, the Earth’s continents move relative to each other. Scientists believe that early in the earth’s history, there was just a single landmass, or continent, which they call Pangaea. About 200 million years ago, Pangaea broke up and the pieces began to drift. Today’s continent of Africa was at … Read more

What Is a Continent and How Many Continents Does the Earth Have, Six or Seven?

what is a continent and how many continents does the earth have six or seven

Continents are usually defined as large, continuous, discrete masses of land, ideally separated by expanses of water. Traditionally, there are seven continents: North America, South America, Europe, Asia, Africa, Australia, and Antarctica. But there are just six distinct land masses because Europe and Asia lie on top of a single tectonic plate, called Eurasia. The … Read more