Definition. Thoracic surgery is the repair of organs located in the thorax, or chest. The thoracic cavity lies between the neck and the diaphragm, and contains the heart and lungs (cardiopulmonary system), the esophagus, trachea, pleura, mediastinum, chest wall, and diaphragm.
If youâre reading this, chances are you switched on a light. But for the 1.3 billion people around the world who lack access to electricity, darkness is a reality. There is no electric light for children to do their homework by, no power to run refrigerators that keep perishables or needed medicine cold, no power for cooking stoves or microwaves.
Worldwide rural electrification progresses only slowly. The IEA estimates that, if current trends do not change, the number of people without electricity will rise to 1.2 billion by the year 2030. Due to high population growth, the number of people without electricity is expected to rise in Sub-Saharan Africa.