[Hadrian (OP)]

http://www.taos-telecommunity.org/epow/EPOW-Archive/archive_2006/EPOW-060515.htm

Explanation:   Last week we found ourselves flying over some of the last unbroken forests of the Congo River Basin.  Beyond the forest's edge, here in western Democratic Republic of the Congo, we suddenly enter a landscape of slash-and-burn ("shifting") cultivation. Dr.Bruce G. Marcot

What you do speaks so loudly that I cannot hear what you say.