There is an envelope of air and gases around our earth. This is also called the atmosphere. It mainly consists of oxygen and nitrogen. We… Read More »How many and what kind of layers does the atmosphere have?
Although the US as an immigrant nation offers an almost infinite range of names and surnames, there are a few that are particularly common. Below… Read More »What are the most common surnames in the United States?
For centuries, the population in China was extremely small due to wars and natural disasters. Around 1949 the population skyrocketed. Since then, there has been… Read More »One Child Policy in China – What About Twins?
Everyone may know that Barcelona and Ibiza belong to Spain. More precisely to Catalonia and therefore the residents are also called Catalonians. But how are… Read More »What are the names of the residents of Barcelona & Ibiza?
