A celebration of nature’s spectacular lightshows, and a visual feast documenting the kaleidoscopic colours that decorate the sky. For millennia, humans have been fascinated with the ghostly green and red curtains of light that shimmer across the heavens on dark, clear nights. Ancient peoples saw these displays as souls of the dead, the torches of the spirits and as harbingers of war. Barely 100 years ago, scientists finally learned that an aurora is created when the Earth’s magnetic field is bombarded with charged particles from the sun. When the charged particles collide with oxygen in the atmosphere, auroras with yellows, greens and reds appear. Collisions with nitrogen result in bluish colours. However, our understanding of the physics behind auroras has not detracted from their wonder. Auroras is filled with over 100 photographs of one of nature’s greatest spectacles, complete with captions that reflect on the folklore, science and beauty of the northern lights. The book poses and answers the many scientific questions about auroras: Why are auroras usually seen only at high latitudes?; How do scientists study them?; What causes the different colours?; Why are massive auroras often followed by blackouts and computer system crashes? Auroras is where cutting-edge science meets the stuff of dreams.

More fascinating and harrowing accounts of the volunteer professionals who risk their lives to help those in desperate need.

Praise for the second edition:

"Direct and evocative, this well-written book pushes readers to the edge of a world of grueling realities not known by most Americans."
-- Choice

Doctors Without Borders (aka Medecins Sans Frontieres, or MSF) was founded in 1971 by rebellious French doctors. It is arguably the most respected humanitarian organization in the world, delivering emergency aid to victims of armed conflict, epidemics and natural disasters as well as to many others who lack reliable health care.

Dan Bortolotti follows the volunteers at the forefront of this organization and its work, who daily risk their lives to perform surgery, establish or rehabilitate hospitals and clinics, run nutrition and sanitation programs, and train local medical personnel. These volunteer professionals: Perform emergency surgery in war-torn regions of Africa, Asia and elsewhere
Treat the homeless in the streets of Europe
Honor cultural customs and understand societal differences that affect health care
Witness and report the genocidal atrocities so often missed by mainstream media

This new and revised third edition includes updates and new inside stories from recent relief operations, and it covers changes within the organization, such as its new emphasis on nutrition. There are also many new and revealing color photographs and insights gained from the author's 2009 trip to Haiti, where he found three different arms of MSF operating in dire conditions.

"Hope in Hell" is a widely acclaimed portrait of a renowned Nobel-winning humanitarian organization, revealing how Doctors Without Borders provides immediate and outstanding medical care.