Is Global Warming Skepticism just Smoke and Mirrors Essay

Is Global Warming Skepticism just Smoke and Mirrors - Essay Example Those who argue that global warming skepticism is just smoke and mirrors contend that global warming is very much real. They further insist that global warming is a phenomenon caused by man’s destructive and indiscriminate activities. They cite greenhouse gas emissions as one of the primary causes of global warming. Studies conducted by the US National Oceanic and Atmospheric Administration established that computer models based on man-made emissions of greenhouse gases (GHG) matched present manifestations of changes in the Earth’s climate (Henderson, 2005). Greenhouse gas emissions come primarily from our oil-powered vehicles and industries, and these emissions are ultimately causing the greenhouse effect responsible for climate change. Chlorofluorocarbons, hydrofluorocarbons and sulfur hexafluoride are compounds created by man. The chlorofluorocarbons are used as coolants in refrigerators and air conditioners, and these are also released in the manufacturing of alumin um. Hydrofluorocarbons are a by-product of foam and other manufacturing processes. These carbon emissions are trapped in our atmosphere for prolonged periods of time; and while they are trapped in the Earth’s atmosphere, they also trap the sun’s heat. They damage the ozone layer that protects the earth from the ultraviolet rays of the sun (Ygoy, 2007). And as more industries are being developed, more pollutants are expected to be introduced into our environment to further contribute to global warming. Many environmentalists fiercely argue against global warming skepticism because there are various scientific proofs indicating the veracity of this phenomenon. Since the start of the 20th century, the global surface temperature has increased by 0.74C.

Astronomy - Black Holes Research Paper Example | Topics and Well Written Essays - 1000 words

Astronomy - Black Holes - Research Paper Example A black hole is a section in the space-time that traps everything passing across the area because of its exceptionally strong gravity force (Raine, & Thomas, 1). It is significant to note that light is also absorbed by the gravity. It is proven and established that an adequately compact mass is capable of distorting space-time to create a black hole. ‘Event horizon’ is a section around the black hole that is mathematically known as a ‘point of no return’. The absorption of light that passes the region resulted to the name ‘black’ hole since there is total darkness at the region. Astronomers are still making expeditions, and have managed to discover the largest black hole referred to as abyssal a yawn that is believed to be 10 times the size of the solar system. The black hole is believed to have absorbed billions of suns existing in the galaxy (Raine, & Thomas, 1). Black holes are created from heavy stars that have a mass of 20 to 25 times compared to the sun. Their gravity overpowers any force that is holding the stars up, making the cores collapse when the heavy stars ‘die’ (Raine, & Thomas, 1). Next, the star collapses exceptionally that is forced to be contained within its Schwarzschild radius, or event horizon, a region where light is absorbed. It is remarkably tiny, and is believed that a black hole fitting a town is probably having a mass of the sun, and the one fitting on a palm of a person has a mass of the earth. At this point, the materials that are enclosed within the Sachwarzschild radius will continue to fall and collapse indefinitely. The collapsing of the materials will reach a point where laws of physics shatter. Finally, ‘super-massive’ black holes are formed differently from the combination of earlier smaller black holes that were formed at earlier stages of the history (Merloni, Nayakshin & Sunyaev , 18). It is believed that small black holes had grown and sucked in gas from their nearby environment (Merloni, Nayakshin