Land of the Midnight Melons?
Land of the midnight melons?
Though fresh produce can be flown in to grace Arctic dinner tables this time of year, the costs are high. Indeed, imported $5 cucumbers are not uncommon in Canada's remote north, observes Dennis R. St. George at the University of Alberta in Edmonton. And the high cost of supplying high-latitude greenhouses and artificially lit growth chambers with heat and/or electricity renders their yields comparably expensive. So St. George is now investigating what he hopes will prove a money-saving alternative: fiber-optic transmission of rays from the sun or from growth lamps to Arctic crops nurtured in heavily insulated indoor gardens.
At a meeting of the American Society of Agricultural Engineers in New Orleans last week, he and colleague John J.R. Feddes reported initial data on their prototype lighting system. To maximize the collection of natural light, its two solar panels track the sun across the sky. Each of the 96 Fresnel lenses on …
Questia, a part of Gale, Cengage Learning. www.questia.com
Publication information: Article title: Land of the Midnight Melons?. Contributors: Not available. Magazine title: Science News. Volume: 136. Issue: 26-27 Publication date: December 23, 1989. Page number: 412. © 2009 Science Service, Inc. COPYRIGHT 1989 Gale Group.
This material is protected by copyright and, with the exception of fair use, may not be further copied, distributed or transmitted in any form or by any means.