Seasonal temperature variations and long-term climate change cause melting of the polar ice caps. As of 2014, temperatures in the Arctic are increasing at double the rate of elsewhere in the world. As a result, ice in the Arctic is thinning and melting. Arctic ice is decreasing by 9 percent each decade, according to data derived from NASA satellite images.Know More
Scientists say that the melting trend is part of overall global warming that is caused by burning coal, gas and oil. The burning of fossil fuels traps gases that cause the Earth's temperature to increase.
Between 1906 and 2005, the average temperature at the Earth's surface increased by about three-fourths of a degree Celsius. For the last half of the period, warming occurred at nearly twice the rate of the first half of the period. NASA estimates that the years between 2005 and 2010 were the warmest since temperatures have been reliably measured in the late 1800s.
Temperatures appear to have been mostly stable for up to 2,000 years prior to 1850 despite some regional variations. The increase in sea levels is consistent with data showing rising temperatures at the surface of the Earth. The Earth's oceans also show an increased temperature due to the overall warming.Learn more about Environmental Science
Scientists conduct a variety of research in Antarctica, including studies on climate change, astronomy, geology, earth science, marine biology and astrophysics, according to WonderfulAntarctica.com. The continent's forbidding environment, with winter temperatures dropping as low as 76 degrees below zero and summer temperatures rising to approximately 32 F, and its lack of native population make Antarctica a choice location for scientists to study the forces of nature in pure, untouched terrain.Full Answer >
Modern models of climate change are grounded in observable evidence and reasonable inference, so they can be regarded as factual. Global warming happens when sunlight warms the Earth's surface and causes it to radiate heat back up into the atmosphere. That heat is then trapped by several known gases.Full Answer >
Most scientists agree that man-made climate change, or global warming, began in earnest during the industrial revolution, which occurred between the 18th and 19th centuries. This occurred, they say, as a result of a large number of greenhouse gases released into the atmosphere. However, in 2008, researchers from the University of Wisconsin-Madison concluded that global warming began as many as 8,000 years earlier with the advent of agriculture and deforestation.Full Answer >
Effects of environmental destruction include global warming, climate change, ozone layer depletion, land degradation and human disease. Environmental destruction occurs when events deplete the earth's natural resources. Its main causes are technological, institutional and socio-economic activities.Full Answer >