Editors' Summary: TSCA provides EPA with broad authority to address potential hazards posed by the manufacture, processing, distribution in commerce, use, and disposal of chemical substances and mixtures. In this first of a three-part series, the authors begin a detailed examination of the statute and regulatory program. They review the origins, objectives, and key components of TSCA, and then analyze TSCA's scope -- focusing particularly on definitional issues and exclusions.

Climate change has important implications for the management and conservation of natural resources and public lands. The federal agencies responsible for managing these resources have generally recognized that considerations pertaining to climate change adaptation should be incorporated into existing planning processes, yet this topic is still treated as an afterthought in many planning documents. Only a few federal agencies have published guidance on how managers should consider climate change impacts and their management implications.

The rise of high-volume hydraulic fracturing has been accompanied by a suite of environmental and social concerns, including potential water and air contamination, greenhouse gas emissions, health effects, and community disruptions. Concerned over these negative environmental impacts, individuals and communities have turned to the law to restrict oil and natural gas production.

Above my desk at work, I keep a button that reads "Save the Ugly Animals Too." It is a reminder that more than just the charismatic megafauna, such as wolves and bald eagles and grizzly bears and whales, are worth conserving. From the standpoint of protecting the web of life, including the ecosystems that benefit us all by providing services such as water purification, flood control, nurseries for our fish and shellfish, and opportunities for outdoor recreation, it is often as important to conserve the lesser known species, the cogs and wheels that drive those ecosystems.

In a recent essay, Katrina Wyman suggests four substantial reforms aimed at improving implementation of the Endangered Species Act (ESA) and furthering species recovery: (1) decoupling listing decisions from permanent species protection;3 (2) requiring the Fish & Wildlife Service (FWS) to implement cost-effective species protection measures;5 (3) prioritizing funding for biological hotspots;6 and (4) establishing additional protected areas.

Katrina Wyman has penned a bold, provocative, and innovative critique of the capability of the Endangered Species Act (ESA or Act) to meet the challenges of an increasingly human-dominated world. Bold because the ESA, perhaps more than any other environmental law, has impassioned champions who disfavor dissent. It is no easy task to critique a law with the truly noble mission to preserve life other than our own, particularly when the law's basic premise is that the mission's success is critically dependent on abundant and altruistic actions by us.

There can be no sustainable development without sustainable transportation. It is an essential component not only because transportation is a prerequisite to development in general but also because transportation, especially our use of motorized vehicles, contributes substantially to a wide range of environmental problems, including energy waste, global warming, degradation of air and water, noise, ecosystem loss and fragmentation, and desecration of the landscape. Our nation's environmental quality will be sustainable only if we pursue transportation in a sustainable way.

Over the past several years, considerable public and private efforts in this country have been directed at reducing the risk of cancer that human exposure to high levels of radon gas poses. These efforts appear to have succeeded in raising public awareness of radon and in increasing testing for radon. For the most part, however, these efforts have been directed toward homeowners and have not addressed the problem of radon in residential rental properties. Yet, in 1989, nearly 34 million homes—over one-third of all housing units in the country—were rental units.

If we want to think about changes in local sustainability over the last 10 years, perhaps the best place to start is with Al Gore. In 1992, just before the Rio Earth Summit and before he was to be tapped as a vice presidential candidate, then-Senator Gore published a treatise on the environment called Earth in the Balance.