Cities under Climate Threat - Philadelphia, Rome and Venice

The impacts of climate change, driven by increasing extreme temperature, sea-level rise, and heavy precipitations, interact and play an essential role in the socio-economic, population health and the well-being of the citizens, especially in cities like Venice, Philadelphia and Rome. Using these cities, this paper presents seven critical climate indicators—health and quality of life, environmental hazards, urban planning, mobility, public safety and security, technology and innovation, and building technologies.

Interactive circular maps (wheel graphic) were developed to combine the issues most relevant to the topic ‘Cities under Climate Threat’ and contextualize the topic. The map emphasizes the interconnections and overlaps between key indicators and subcategories linked to climate change and urbanization.These indicators illustrate how climate change affects cities and highlight the necessity for immediate action.

In Philadelphia, rising temperatures, increased rainfall, sea level rise, and deteriorating air quality pose significant challenges. The city's Climate Action Plan aims to mitigate these effects through strategies that reduce greenhouse gas emissions and enhance urban resilience. Key projects like Schuylkill Yards and the Center City Technology & Innovation Hub exemplify sustainable urban development and innovative design solutions.

Venice faces existential threats from sea-level rise and frequent flooding, endangering its historic infrastructure and cultural heritage. Measures such as the MOSE barrier system and sustainable urban development projects aim to protect the city. Proposed developments at Tronchetto, Iuav Campus, and Isola Sant’ Elena focus on resilience, incorporating green infrastructure and sustainable design to mitigate flooding and support local communities.

Rome's urban challenges include heavy traffic congestion, pollution, and the preservation of historical sites. The Vatican Welcome Center and The Eighth Hill projects aim to enhance accessibility, reduce environmental impact, and integrate green spaces within the urban fabric. These initiatives highlight the potential for sustainable urban transformation in historic cities.

The paper concludes that effective urban planning, community involvement, innovative technologies, and inclusive practices are essential for building climate-resilient cities. By adopting these strategies, cities cannot only address current climate challenges but also ensure a sustainable and equitable future for their residents. The findings provide a blueprint for other cities worldwide to navigate the complex interplay between urban development and climate change.