Scientists Explain Science Behind the Giant ‘Scar’ That Slices Through Scotland Earth is filled with many intriguing features ...

From Gothic castles and creaking mansions to centuries-old graveyards that terrify after dark, the world is filled with places that go bump in the night.

In recent years, social scientists have surveyed people around the world to ask how happy they are. In many cases, they’ve found meaningful correlations between people’s self-reported rankings ...