What happened: Several US states have filed a lawsuit challenging the Trump administration's recent decision to reverse a 2009 ruling that supports policies to reduce greenhouse gas emissions.
Why it matters:
- The outcome could affect national efforts to combat climate change and regulate emissions.
- States and communities aiming to lower pollution may face setbacks if the reversal stands.
MNN Take: This legal challenge highlights ongoing disputes over environmental regulations and their role in US climate policy.
Sources: BBC US & Canada