In addition to their own resiliency, living things and the cells they are made of are protected from excessive amounts of UV radiation by a chemical called ozone. A layer of ozone in the upper atmosphere absorbs UV radiation and prevents most of it from reaching the Earth.
Fire rips through Torch skyscraper in Dubai. Read more about sharing. A fire has swept through the Torch skyscraper in Dubai, one of the tallest residential buildings in the world. Strong winds helped the blaze to spread across the 336.1m (1,105ft) high building in the marina district. One eyewitness told the BBC there was debris flying everywhere, falling into neighbouring buildings.
Torch down roofs also reflect UV rays, which helps to keep indoor temperatures down during the summer. The average lifespan for a three-layer torch down roof is two decades. Two-layer roofs tend to last around 15 years, and they rarely need to be repaired. They are free of harmful fumes. Unlike tar, torch down roofing systems do not give off any type of harmful, noxious fumes.