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.
An exhaustive new study by McKinsey & Company (really, it's 120 pages long) about the barriers to Internet adoption around the world illuminates a rather surprising reality: 4.4 billion people scattered across the globe, including 3.2 billion living in only 20 countries, still aren't connected to the Internet.