cave drawing in Borneo is at least 40,000 years old, raising intriguing questions about creativity in ancient societies.", The New York Times, 7 November
Wayback Machine National High Magnetic Field Laboratory Answers to several questions from curious kids about magnets Magnetic units discussed Archived 2011-01-06
Prayers, 250 p Rustom C Chothia: Zoroastrian Religion Most Frequently Asked Questions, 2002, 44 p UNESCO Parsi Zoroastrian Project http://parsiana.com/ Wikimedia