The USA alone has more wilderness than the entire continent of Africa does, but the natural world is not the same as it was 20, 50 or 100 years ago.  And the natural world than was far different than preceding generations.

Mercury levels in excess of U.S. Environmental Protection Agency health thresholds for potential impacts to fish, birds, and humans have been detected in fish in some of the most remote national park lakes and streams in the western United States and Alaska.

 Mercury is harmful to human and wildlife health. It arises from natural sources, such as volcanic eruptions, and from human sources such as burning fossil fuels in power plants. Mercury is distributed at local or regional scales as a result of current and historic mining activities. Human activities have increased levels of atmospheric mercury at least three fold during the past 150 years.  

The world could be less than 40 years away from a food shortage that will have serious implications for people and governments, according to a senior science advisor at the U.S. Agency for International Development. It's not Paul Ehrlich/John Holdren Doomsday Prophet levels of gloom, but it's a sign we need to keep science advancing.

Scientists who monitored skuas in Adélie Land and the Kerguelen Islands for ten years have found when these seabirds exhibit high mercury levels in their blood, their breeding success decreases. 

The researchers from the Centre d'Etudes Biologiques de Chizé and from the Littoral, Environnement et Sociétés Laboratory (CNRS / Université de La Rochelle) say that this is the first time that toxicological measurements have been combined with a population study carried out over such a long period in the Antarctic and Subantarctic. 
Can you put a price on ecological restoration? Of course you can. In fact, you must, or the discourse will be taken over by activists for whom price is no object. In the real world, an evidence-based price on clean water and soil fertility helps the United Nations set ecological restoration targets for degraded and deforested land.

Forests provide essential ecosystem services for people, including timber, food and water. For those struggling with the after-effects of deforestation, the main hope lies in rebuilding forest resources through ecological restoration.

Researchers at Bournemouth University have shown that placing a monetary value on ecosystem services provides a mechanism for evaluating the costs and benefits of reforestation activity.

American farmers lead the world in productivity coupled with environmental responsibility, producing far more food on far less land than was even imagined decades ago. If the world had America's efficiency in agricultural dematerialization, an area the size of Amazonia could be reverted back to its natural state.

Five environmental groups are alleging that NASA could be about to break the commitments it made in a 2010 agreement to clean up all the detectable contamination at its former Santa Susana Field Lab (SSFL) rocket testing site in the Simi Hills of California.

They claim that NASA may be laying the groundwork for a breach by falsely claiming that commenters on its draft Environmental Impact Study (EIS) on the cleanup were evenly divided on whether NASA should live up to its obligations in the cleanup agreements. When pressed by environmental groups to provide actual data to backup such a claim, they say NASA refused, and one of the groups, Consumer Watchdog, submitted a Freedom of Information Act request, obtaining all submitted comments.
When Rachel Carson's "Silent Spring" was taking the country by storm 50 years ago, it was a puzzle to scientists and farmers who did not see the cultural future looming in front of them. Scientists dismissed it as anecdotal evidence while farmers recognized that if you don't use a pesticide according to instructions, bad things happen. Both knew that without pesticides, yields would be devastated.

Consuming foods grown in urban gardens has become a big fad, and those foods might even offer health benefits, unless a lack of knowledge about the soil used for planting poses a health threat to both consumers and gardeners. 

A new paper the Johns Hopkins Center for a Livable Future (CLF), researchers identifies a range of factors and challenges related to the perceived risk of soil contamination among urban community gardeners and found a need for clear and concise information on how best to prevent and manage soil contamination. 

Greenhouse gas emissions from food production may threaten the UN climate target of limiting global warming to 2 degrees Celsius, according to a paper from Chalmers University of Technology, Sweden. What is the data? No data needed.