Supplied by AECOM, edited by Eamonn Ryan
Why systems thinking matters more than ever. This is part two of a two-part series.

World Environment Day is ultimately about recognising both the scale of the challenge and the opportunity for meaningful action. World Environment Day
The HVAC&R sector plays a critical role in helping buildings, industries and communities adapt to a changing climate. As environmental risks become increasingly interconnected, the industry’s responsibilities extend beyond energy performance to include-positive design and support for vulnerable communities. Understanding these broader connections is becoming essential for future-ready HVAC&R solutions.
In part one, Elisabeth Nortje, director – Environment at AECOM, highlighted how organisations are shifting from traditional environmental compliance towards resilience-focused planning. The next challenge, she says, is recognising that environmental risks rarely occur in isolation.
The growing challenge of interconnected risks
According to Nortje, one of the greatest environmental challenges facing governments and businesses today is the way risks overlap and reinforce one another. “That idea of interconnected global risks is something I always encourage my team to think about. Climate change, biodiversity loss, water insecurity and social vulnerability do not exist independently from one another.”
Looking ahead, Nortje points to a future shaped by intensifying climate impacts, biodiversity decline, food and water insecurity and emerging health challenges. Addressing these issues will require organisations to move beyond siloed thinking and embrace integrated planning approaches.
This philosophy is reflected in AECOM’s Sustainable Legacies programme, which seeks to embed sustainability and resilience across all aspects of project delivery while advancing climate adaptation, decarbonisation and nature-positive infrastructure.
Investing in nature-based solutions
One area receiving increasing attention is the use of nature-based solutions to strengthen resilience and support biodiversity. AECOM’s sustainability initiatives highlight growing investment in biodiversity enhancement, climate adaptation strategies and tools that help organisations assess nature-related risks during infrastructure planning.
For HVAC&R stakeholders, this trend may influence future building design approaches, encouraging greater integration between mechanical systems, water management, green infrastructure and urban cooling strategies.
The human impact of environmental change
While climate impacts affect organisations worldwide, Nortje emphasises that vulnerable communities often face the greatest consequences. “People will always settle close to water because they need water, even if those areas are within dangerous floodplains,” she explains.
As extreme weather events become more frequent, communities already facing infrastructure and economic challenges are often hit the hardest. Flooding, water shortages and inadequate infrastructure highlight the intersection between environmental risk, poverty and urban development.
“Where we should be investing in long-term planning and resilience measures, financial and political pressures often make that difficult,” says Nortje. This challenge reinforces the need for infrastructure investments that improve resilience while supporting social and environmental outcomes.
Sustainability in an uncertain world
Environmental priorities continue to evolve alongside political and economic changes. Recent shifts in international policy landscapes have created uncertainty around climate programmes and renewable energy initiatives in some regions. “It shows how quickly focus can change,” Nortje notes. “Environmental planning and climate resilience require long-term thinking, but political cycles are often much shorter.”
Despite this uncertainty, demand for sustainability, resilience and environmental advisory services continues to grow as organisations respond to mounting climate pressures and stakeholder expectations.
A century of possibility
For Nortje, World Environment Day is ultimately about recognising both the scale of the challenge and the opportunity for meaningful action. “What we are confronting is a century of loss and a century of possibility. Because despite everything, there is still enormous opportunity to make different decisions and create more resilient, sustainable futures.”
Through its environmental services and Sustainable Legacies strategy, AECOM continues to support clients with climate resilience, biodiversity protection, water security, decarbonisation and sustainable development initiatives.
“As engineers, scientists, planners and environmental professionals, we have a responsibility to think long-term. The decisions we make now will shape the resilience of communities, infrastructure and ecosystems for generations to come,” Nortje concludes.
World Environment Day
