Monthly Archives: April 2008

Principles of Aerial Photography

  Introduction to Air Photo Interpretation Unlike a map, features on an aerial photograph are not generalized or symbolized. Air photos record all visible features on the Earth’s surface from an overhead perspective. Although the features are visible, they are … Continue reading

Posted in Remote Sensing 101 | Leave a comment

Save The Earth — Hug A Logger

Climate Change: As environmental alarmists entertain themselves by turning off lights, their efforts sometimes lead to unintended consequences. A new study, for example, shows they may be warming the earth by saving trees. Read More: Global Warming The latest effort … Continue reading

Posted in Environment, Global Warming | Tagged , | Leave a comment

How Mountains Are Made

    Why are seashells found on Mt. Everest? Millions of years ago, Mt. Everest was not a mountain at all. It was underneath the ocean! A lot has changed since then. The outer skin of the earth – both … Continue reading

Posted in Uncategorized | Leave a comment

Pyroclastic Flows and Their Effects

Mayon Volcano, Philippines What are pyroclastic flows? Pyroclastic flows are high-density mixtures of hot, dry rock fragments and hot gases that move away from the vent that erupted them at high speeds. They may result from the explosive eruption of … Continue reading

Posted in Volcanoes | 1 Comment