Brigit Hirsch

Brigit Hirsch is not mentioned in either of the provided news articles. The articles focus on the Trump administration's expected actions regarding US climate change policy and environmental regulations, specifically the EPA's plans to revoke a key scientific finding related to greenhouse gas regulation and to stop calculating the health and economic benefits of air pollution rules. The articles highlight a shift towards a business-friendly approach, prioritizing costs to industry over healthcare savings and lives saved from pollution reduction. Therefore, without any information about Brigit Hirsch, it's impossible to provide a summary about their background, relevance, or connection to these events.