Since 2000, there have been significant social, technological, economic, and environmental changes. Key advances include the widespread adoption of GPS, hybrid vehicles, text messaging, and iPods. Socially, book clubs, celebrity culture on social media like Facebook, and tattoos have become more common. Economically, China has risen as a global economic power while manufacturing jobs have left the US. The lack of financial regulations contributed to the Great Recession. Environmentally, 9 of the 10 warmest years on record were since 2000, recycling is ubiquitous, polar ice caps are melting, and sustainability has become important.