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.
How many atheist are in the world today? Around 2.3% of the World's population describe themselves as atheist with a further 11.9% described as non-theist (many non-believers find it odd to have a name for not believ â¦ ing in something). The World's population is around 6.7 billion-so this gives a figure of around 951 million of atheists and non-theists. However, it seems a little unfair to classify children under 5 (say) as having any religious beliefs so there are probably well over a billion non-believers.