Safeguarding Space: Environmental issues, risks and responsibilities

United Nations 1 month ago

The space sector is growing exponentially, with over 12,000 spacecraft deployed in the past decade and many more planned as the world embraces the benefits provided by satellite services. This growth presents significant environmental challenges at all layers of the atmosphere. These include air pollution from launch emissions, spacecraft emissions in the stratosphere, spacecraft demise, orbital debris (legacy and new) and increased risk of collision creating more debris; with the potential to alter atmospheric chemistry and dynamics, climate change and deplete stratospheric ozone. Objects that do not disintegrate on re-entry into Earth’s atmosphere pose threats to ground safety and marine ecosystems. The increase in space objects in orbit is also affecting the darkness and quietness of the sky and Earth-based astronomical observations.
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layersDaily Sustainability Digest

Published about 9 hours ago



Bio‑based construction is entering a decisive implementation phase as new engineering standards drive measurable performance and credibility. The release of a structural manual for bamboo transforms renewable building materials from conceptual to certifiable, giving engineers a shared framework for specification, durability testing and fire safety that aligns with standards for steel and concrete. This move advances sustainable construction by supporting low carbon design and enabling embodied carbon measurement across permanent structures. Integrating bamboo into structural use contributes to whole life carbon assessment and lifecycle assessment processes that underpin sustainable building design and environmental sustainability in construction.

The White Rose Forest’s 25‑year strategy to plant 134 million trees across northern England represents a significant link between green infrastructure and construction supply chains. Managed afforestation aligned with local processing, design standards and resource efficiency in construction has potential to deliver low embodied carbon materials, support net zero carbon buildings and embed circular economy principles. Tree planting tied to sawmilling and design verification increases the availability of green building materials while strengthening the regional circular economy in construction.

These developments tighten the bio‑based supply chain from nature to building performance. Developers are urged to adopt sustainable material specification within procurement to reduce the carbon footprint of construction and achieve whole life carbon targets. Early collaboration with insurers and BREEAM assessors can accelerate certification and enable coherent life cycle cost evaluation. Aligning afforestation programmes with industrial capability, testing and environmental product declarations (EPDs) will solidify the foundation for carbon neutral construction and measurable decarbonising of the built environment.

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