Boreal forests serve as important global sources or sinks of carbon (C) and wildfire is a major driver of C storage in these forests. Although fire releases CO2 to the atmosphere, it also converts plant biomass into forms of black carbon, such as charcoal, that are resistant to microbial attack and persist in the soil for thousands of years. It has frequently been suggested that, because of its resistance, black C can serve as an important long-term C sink that may help offset the release of human-induced CO2 to the atmosphere.

Evanston, Illinois: Everyone seems to be talking about a carbon tax.

An increasing number of people are exposed to aircraft and road traffic noise. Hypertension is an important risk factor for cardiovascular disease, and even a small contribution in risk from environmental factors may have a major impact on public health. The HYENA (Hypertension and Exposure to Noise near Airports) study aimed to assess the relations between noise from aircraft or road traffic near airports and the risk of hypertension. March 2008

The challenge in working with environmental improvements is to select the action offering the most substantial progress. However, not all actions are open to all actors in a product chain. This study demonstrates how life cycle assessment (LCA) may be used with an actor perspective in the Swedish postfarm milk chain.

The market value is of central importance as the basis for determining the compensation paid to landowners who are forced to hand over land for public use. This is particularly the case in Sweden, where the market value is determined according to the Expropriation Act. It is against this background that this article discusses the following questions.

"There is no good reason why a switch from tobacco products to less harmful nicotine delivery systems should not be encouraged.' So stated a 1991 Lancet Editorial, yet 16 years later cigarettes continue to dominate the nicotine-delivery system market, despite their clear health risks. (Editorial) Oct 6-12, 2007

Sweden recently announced an ambitious plan to check greenhouse gas (ghg) emissions in the country. It has targeted cutting down its ghg emissions to at least 30 per cent below 1990 levels by 2020.

Polar Research

This report represents an important contribution to the overall discussion on climate change and a post-2012 climate regime. It provides important insights regarding the history of the climate convention and various negotiating positions. It defines the major barriers for an effective post-2012 agreement and suggests possible action to overcome those barriers.

From the mid-1970s and on, the contribution to air pollution of carbon monoxide, hydrocarbons and nitrogen oxides from gasoline passenger cars in the developed world has been reduced through co-evolution of regulation and commercial introduction of catalytic emission control technology, now part of hundreds of millions of cars, trucks and buses worldwide. This dissertation is a disaggregated study of the global introduction of catalytic emission control technology as a measure to reduce local air pollution.

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