Pinpointing your place is extremely easy on the world map if you exactly know the latitude and longitude geographical coordinates of your city, state or country. With the help of these virtual lines, ...

An curved arrow pointing right. Although we are now smart enough to know that the sea horizon is not the edge of the world, it is difficult to name exactly which countries lie beyond. This ...

Discover how people use imaginary lines called latitude ... is in the world. What are time zones? Discover that when it's daytime in the UK, it's night-time in Australia. What is a map?

Discover how people use imaginary lines called latitude ... is in the world. What are time zones? Discover that when it's daytime in the UK, it's night-time in Australia. What is a map?

Half of the global population already lives in cities, and by 2050 two-thirds of the world's people are expected to live in urban areas. But in cities two of the most pressing problems facing the ...