[Lewis Thomson (OP)]

Søren has sent this question in to find answers to.

"Lately I watched a programme on Rainforests. Here it was stated that the rainforest in Congo was only about 15 million years old. This had me wondering how and why the weather pattern changed/could change so drastically, as the weather, in large, is a function of earth's rotation."

What do you think? Discuss your answers in the comments below...