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.Continue Reading
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 >
During a high school debate on global warming, explain that the scientific community at large warns of severe negative consequences to come if humans do not take action to stop climate change from occurring. Cite reputable organizations, such as the Natural Resources Defense Council and Union of Concerned Scientists, to support this claim. Describe how the buildup of carbon dioxide in the atmosphere contributes to increased average temperatures by trapping heat from the sun.Full Answer >
According to the Seattle P-I, the environmental and ecological concerns of the tundra biome include climate change, air pollution, human development and ecological imbalances. Recently, humans have been increasingly impacting the tundra both directly and indirectly. In the past, the tundra has not been able to support much human life and therefore remained free of human disturbance.Full Answer >
Scientist David Suzuki's advocacy via radio, television and print media has raised awareness around the world about the dangers of climate change and the importance of reducing carbon emissions, said the David Suzuki Foundation. Suzuki has brought attention to the interests behind claims that climate change science is inconclusive. For his lifetime of work, Suzuki has been awarded numerous public honors, including national recognition from his home country of Canada.Full Answer >