Pain may sometimes be the reason why people change. Getting bad grades make you realize that you need to study. Debts remind you of your inability to look for a source of income.

One of the earliest activities we engaged in when we first got into astronomy is the same one we like to show our children just as soon as their excitement about the night sky begins to surface. That is the fun of finding constellations.

The allure of exotic spices launched Columbus on his journey of discovery.