The 2020 edition of Key Developments in Environmental Law features articles from the following contributors:

• Preface to the 2020 Edition, by Stanley Berger
• Environmental obligations and compliance during the COVID-19 pandemic: a Canadian comparison, by Julie Perron, Rick Coburn, Gabrielle K. Kramer, Matti Lemmens and Dionysios Rossi
• What Can the Act of God Defence in Regulatory offences Tell us About Responding to the COVID19 Crisis?, by Stanley D. Berger
• Are Unprecedented Times an Exceptional Circumstance? The COVID-19 Global Pandemic and its Impact on a Defendants Right to a Speedy Trial under Section 11(b) of the Charter, by Jessica Boily and Larissa Parker
• Constitutional Limits on the Provinces Authority to Regulate Federal Undertakings under the Guise of Environmental Protection, by Jean Lorti, Patrick Ostiguy and David Boire-Schwab
• Will Governments Embrace Constitutional Imperatives Flowing from the Honour of the Crown?, by Kirk Lambrecht
• UK climate change law and the Heathrow airport decision: a narrow point of law or the high water mark for climate change litigation?, by Simon Tilling and Simon Cox
• The Irish Supreme Court Rejects the Irish Governments Plan to Tackle Climate Change, by Stanley Berger
• Environmental Regulatory Orders in the Wake of Redwater: Addendum, by Jennifer Fairfax, Patrick Welsh and Isabelle Crew