The environmental impact includes landslides on deforested slopes, which damage thousands of homes. Over the past 20 years, however, small, wood-burning stoves have become ubiquitous, as many Georgians, without access to natural gas or pressed for cash, have turned to the forests to heat their homes. Worldwide practice demonstrates that all oil and gas industry activities have environmental effects: geological and geophysical surveys, drilling and production activities, accidental oil spills, decommissioning of installations, gas and oil transportation, and gas and oil processing.