Jim DavidsonJim Davidson is an accomplished climber, speaker, and science writer. Since 1982, he has climbed across the United States and been on high-altitude expeditions to Alaska, Argentina, Bolivia, Ecuador, Mexico, Nepal, and Tibet. Formerly an environmental geologist, he is now a professional speaker with Speaking of Adventure and has spoken to more than 30,000 people across the United States and overseas. He lives in Fort Collins, Colorado, with his wife and two children. Read More Read Less