Dubai has a population of approximately 1.5 million people as of 2008. Sheikh Mohammed is the ruler of Dubai, which covers an area of about 2,400 square meters. The official language is Arabic, but English and Hindi are also commonly used for business. The culture is rooted in Islamic traditions, so tourists must respect the local customs and culture. Summer temperatures often exceed 40 degrees Celsius, making it very hot and humid. Dubai has a growing economy and is the second wealthiest emirate in the United Arab Emirates.