Trees store information about climatic conditions in the rings they lay down each year. Dendrochronology — the science of studying these rings — allows scientists to learn about the ancient climate on Earth.
Syria's Ali Ferzat and Egypt's Mohamed Anwar radically departed from long-established rules about how to depict their leaders. Their images served as a catalyst for massive uprisings that swept across the Middle East and North Africa in 2011.
The story you just read is freely available and accessible to everyone because readers like you support The World financially.
Thank you all for helping us reach our goal of 1,000 donors. We couldn’t have done it without your support. Your donation directly supported the critical reporting you rely on, the consistent reporting you believe in, and the deep reporting you want to ensure survives.