A Burning Issue

Created in the early 20th century to provide scientific management of the nation's forests, the U.S. Forest Service was, for many years, regarded as a model agency in the federal government. The author contends that this reputation is undeserved and the Forest Service's performance today is unacceptable. Not only has scientific management proven impossible in practice, it is also objectionable in principle. Furthermore, the author argues that the Forest Service lacks a coherent vision and prefers to sponsor only fashionable environmental solutions--most recently ecosystem management. Describing its history and failures, the author advocates replacing the service with a decentralized system to manage the protection of national forests.

Substitution and adulteration in traded herbal raw material are common practice in the herbal industry due to the extinction of required species, deforestation and incorrect taxonomical identification. Herbalists have adopted methods to create high quality adulteration which cannot be detected without performing microscopic examination or chemical analysis. It is difficult to establish specific quality control standards due to the complex nature and innate unpredictability of the chemical constituents of medicinal herbs.The main parameters for measurement and adulteration prevention in medicinal herbs are morphological and microscopic investigation, chemical profiling and DNA barcoding. The need for highly sensitive and more effective approaches for the authentication of medicinal herbs is necessary in order to promote the acceptance of herbal products. Adulteration In Traditional Medicinal Herbs is aimed at promoting awareness of adulteration in traditional herbal medicines for the worldwide scientific community. Parameters are established for the prevention of adulteration through classical and modern scientific tools. Valuable case studies are presented based on ethno-medicinal surveys performed in many herbal markets in Pakistan. Collections of various samples were obtained from these shops then compared with the original plants collected from field. Various phytochemical, organoleptic and DNA barcoding techniques were used in order to detect adulteration in the marketed herbal samples. This book is the first of its kind and is aimed at helping the scientific community to identify particular medicinal plants which are facing adulteration problems in herbal markets and to estimate the extent of adulteration and substitution in commonly used medicinal herbs.

Intended to situate self-examination and issues-based learning in reality in a professional context in which teachers and students work to shape practices and identities.

The Burning Question reveals climate change to be the most fascinating scientific, political and social puzzle in history. It shows that carbon emissions are still accelerating upwards, following an exponential curve that goes back centuries. One reason is that saving energy is like squeezing a balloon: reductions in one place lead to increases elsewhere. Another reason is that clean energy sources don't in themselves slow the rate of fossil fuel extraction. Tackling global warming will mean persuading the world to abandon oil, coal and gas reserves worth many trillions of dollars — at least until we have the means to put carbon back in the ground. The burning question is whether that can be done. What mix of politics, psychology, economics and technology might be required? Are the energy companies massively overvalued, and how will carbon-cuts affect the global economy? Will we wake up to the threat in time? And who can do what to make it all happen?