This week:

• Dr. Joshua Hjartarson speaks with environmental law correspondent Naomi Jehlicka about federalism and how it impacts on which level of government bears responsibility for enacting environmental law and legislation.
• Recent science correspondent Sapna Sharma returns to speak with Adam Jeziorski, the author of a recent Science report examining the impacts of calcium declines on freshwater lakes and their food webs.

The headlines in brief:

• Two leaks were found last year in the Chalk River nuclear reactor used to produce medical isotopes;
• Environmentalists have largely panned the federal budget for not providing enough new funding for renewable energy and public transit;
• The federal government announced that it will be relaxing rules that mandate environmental assessment of new building projects;
• The EU is proposing the creation of a transatlantic carbon trading scheme with the United States;
• California is cracking down on the environmental impact of television sets;
• Forests in the western regions of North America are dying twice as fast as they were a few decades ago due to global warming.

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