Like most people, you have very likely heard the word limestone. We use the word frequently in Windows Through Time. But do you really know what a limestone is? If you saw one, could you identify it?

Don’t worry if you’re unsure about the three-ton limestone sculpture in the lower garden of Pavilion VI, why it’s there remains a mystery. The sculpture is the Merton Spire, a really big gift from ...

In the early hours of the geologic time clock, spanning millions of years, the earth was covered with a gaseous atmosphere and warm shallow seas constantly lashed by storms from above and battered by ...