Category: Misc

When you pour a sugar cube into coffee, it dissolves quickly. But when the same sugar cube is poured into a cold drink, it takes a long tine before it finally breaks down. Why is that?

Most metals are described as odorless substances. Is it so? And if so, where does the distinctive smell of metal coins, keys, nails and tools come from?

The great discoveries of Portuguese and Spanish navigators who set out to discover new continents and open up new trade routes.