nutrient pollution, definition of

Climate change is a change in the statistical distribution of weather over periods of time that range from decades to millions of years. It can be a change in the average weather or a change in the distribution of weather events around an average (for example, greater or fewer extreme weather events). Climate change may be limited to a specific region, or may occur across the whole Earth.

In recent usage, especially in the context of environmental policy, climate change usually refers to changes in modern climate. It may be qualified as anthropogenic climate change, more generally known as global warming.

Wikipedia - Climate Change entry

• Experts warn earths topsoil is almost gone
  Nearly half of all the world’s top soil has disappeared over the last 150 years, despite its critical importance to our food supply. At least 95 percent of our global food supply relies on rich topsoil for production and the better the soil the more...
• Study Finds National Park Ecosystems Threatened by Nutrient Pollution
  Due to their federally protected status and careful management, it is easy to assume that national parks are safe from the harm of human activity. Unfortunately, many of the parks across the country are vulnerable to nutrient pollution caused by agricultural