Signs of Global Warming

Rising global temperatures have already had a major impact on the environment and ecosystems in many regions of the world. The 2007 IPCC report, for example, found that numerous environmental changes can be clearly linked to climate change. Arctic glaciers are rapidly melting, creating more and larger glacial lakes and increased earlier spring runoff into snow-fed rivers. Mountainous regions are experiencing more rock avalanches. And warmer temperatures are causing previously frozen soil,...

Clean Coal and Nuclear Technologies

Because renewable technologies need further development, some experts argue that currently abundant fuel sources, such as coal and nuclear energy, may have to be relied on until better energy sources are available. The United States, for example, already uses coal to produce much of its electricity, and it has enough coal to last another 250 years. President Bush has proposed that more coal plants be built to reduce the country's reliance on foreign oil, but the problem is that coal is a fossil...

The warming Effects of the Industrial Revolution

Steam Poer Invention

Until recently, humans did not significantly affect the much larger forces of climate and atmosphere. Many scientists believe, however, that with the dawn of the industrial age and the burning of fossil fuels such as coal, natural gas, and oil humans began to significantly add to the amounts of carbon dioxide and other greenhouse gases in the atmosphere, enhancing the planet's natural greenhouse effect and causing higher temperatures. Climate change . . . is the single greatest threat that...

Threat Bigger than Terrorism

Current preoccupation is with terrorism, but in the long term climate change will outweigh terrorism as an issue for the international community. . . . Climate change is going to make some very fundamental changes to human existence on the planet. David Anderson, a former Canadian environment minister. Quoted in CNN.com, Official Global Warming Bigger Threat than Terrorism, February 6, 2004. reut index.html. Since tropical weather is expected to expand as temperatures rise, another health...

Natural Climate Changes

Climate scientists have known since the eighteenth century that Earth's climate can change dramatically due to natural causes. In fact, evidence from ice cores extracted from the Arctic and Antarctic regions show that planetary temperatures have varied by more than 20 degrees Fahrenheit (11.2 degrees Celsius) during the last 350,000 years. Long periods of lower temperatures have resulted in prolonged ice ages that lasted tens of thousands of years. Approximately every 100,000 years, these cold...

Warming

Detroit New York San Francisco New Haven, Conn Waterville, Maine London ALL RIGHTS RESERVED. No part of this work covered by the copyright herein may be reproduced, transmitted, stored, or used in any form or by any means graphic, electronic, or mechanical, including but not limited to photocopying, recording, scanning, digitizing, taping, Web distribution, information networks, or information storage and retrieval systems, except as permitted under Section 107 or 108 of the 1976 United States...