The megalithic site of Gunung Padang in the highlands of western Java was constructed some 2,000 years ago over the course of several generations. Similar stone monuments are found across the ...

Classical and quantum mechanics don’t really get along as the science of the subatomic can get, well, weird. Take, for instance, quantum entanglement, which says that the state of one particle can be ...

Susan Bard, MD, is a board-certified general and procedural dermatologist with the American Board of Dermatology and a Fellow of the American College of Mohs Surgery. Signs of photoaging include age ...

Julia Kagan is a financial/consumer journalist and former senior editor, personal finance, of Investopedia. Ebony Howard is a certified public accountant and a QuickBooks ProAdvisor tax expert. She ...