Knowledge center. An aneurysm occurs when part of a blood vessel (artery) or cardiac chamber swells, - either the blood vessel is damaged, or there is a weakness in the wall of the blood vessel. As blood pressure builds up it balloons out at its weakest point. Symptoms depend on the size of the aneurysm, how fast it is growing and its location. 2  A large cerebral aneurysm can lead to numbness in the face or problems with the eyes. 3  Cerebral aneurysms most commonly form at the base of the brain. 4  Around 1 in 4 aortic aneurysms occur in the thoracic area of the aorta.
Wind power is one of the most promising when it comes to renewable energy sources. The wind has incredible potential, but there are some drawbacks as well. Wind power turbines must be situated in areas where there are high averages of substantial amounts of wind.
Who are The Most Promising Clean Technology Companies on The Planet. The Guardian and Cleantech Group recently announced the Global Cleantech 100. This is the first ever list of this scale highlighting the most promising private clean technology companies around the world. The Global Cleantech 100 recognizes companies at the forefront of cleantech innovation offering solutions to some of the worldâs most pressing environmental challenges.