A positive feedback loop makes an existing process speed up while a negative feedback loop decreases the impact of an existing process. A source emits carbon dioxide and other greenhouse gases while a sink retain and stores. ...

The quest for sustainable use of the planet is admirable, however the flagrant waste of biospheric resources overrides any efforts towards this goal. Although there is not single solution to achieve immediate sustainability, ...

As climate, similar to most complex, multivariate systems, approaches disequilibrium, variability of critical attributes increases significantly. In order for ecotoxicological testing to be reliable, it should incorporate ...

Sustainable use of the planet is an attractive goal, especially concerning intergenerational ethics. However, a major ecological tipping point has been passed (e.g, melting glaciers) and, in the last three years, evidence ...

Humans capacity to reason and dependence on nature has been overshadowed by greed and materialism. As a result, humankind has ignored and attacked scientists and the evidence they have found concerning the state of our ...

When scientists listen to analyses of existing evidence, they usually can decipher which analysis is supported by a preponderance of evidence, and if no clear evidence emerges they wait until adequate information is ...

Lakes and reservoirs worldwide are increasingly experiencing depletion of dissolved oxygen (anoxia) in their bottom waters (the hypolimnion) because of climate change and eutrophication, which is altering the dynamics of ...

Environmental refugees are produced when the human population exceeds the carrying capacity of a particular region and its inhabitants are forced to search for a more hospitable area. Since not much has been done to reduce ...

In the latter part of the 20th century and the beginning of the 21st century, rapid climate change and damage to the biosphere have increased the risks to Homo sapiens. So much harm has already been done to the biosphere ...

Scientific evidence on climate change, including global warming, is more abundant than ever, but politicians and citizens are rejecting or attacking scientists for the evidence they have found. Science is reality based on ...