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While our modern world is today unimaginable without space, the space landscape is changing fast. For long near space has been a vast resource to exploit with few limits. This situation is however changing since in reality orbital resources are scarce and are threatened by the growth of the space debris population. Space debris is one of the human-made problems along the climate crisis, air pollution or ocean plastic pollution among other environmental issues that keep growing despite the awareness of their dangers to societies and our economies. The debris population has been growing drastically over the years due to the increase of rockets and satellites launches, accidental collisions of space objects, as well as deliberate Anti-Satellite Tests (ASAT s). Addressing appropriately the space debris issues is today an unescapable necessity to allow realising the deployments of the planned space constellations in a responsible manner. This would also provide stability and continuity to space activities so that the public and commercial sectors can continue to innovate and invest in new ventures that continue building a robust space economy. This paper discusses the direct and collateral challenges of space debris on the space economy and presents technological and political actions needed to face this growing problem for the present and future generations. [ABSTRACT FROM AUTHOR]

Behaviour, practices and culture constitute a powerful human factor in the energy system; in particular the interactions between technologies, practices and norms lock individuals in to certain patterns of (often inefficient) energy use. Consequently, behaviour change has gained traction amongst policymakers as a key area of intervention given the impact energy-related behaviours have on climate change. Given the increasing emphasis within policy perspectives in the European Union, it is surprising that a gap in understanding of the success factors of behaviour change initiatives remains. This paper addresses this gap by identifying and characterising behaviour change initiatives across five European countries (the UK, Ireland, France, Italy, and Spain). The paper provides insights into the success factors and commonly encountered barriers to behaviour change initiatives. Initiatives are classified into 6 broad categories (community-based interventions; information and awareness based interventions; eco-districts; show-case events; energy switching; and smart-technology focused interventions). The results suggest that there are significant knowledge gaps between what is known to work to engage individuals in behavioural change and what is currently being applied in practice. An over-reliance on education and awareness-raising projects is evident, illustrating that such projects do not sufficiently aim for sustained behavioural changes. A dearth of projects incorporating fiscal measures, regulations or legislation to drive behaviour change reflects reluctance on behalf of decision-makers to engage widely with diverse approaches to foster lifestyle change. This paper contributes understandings of the different models and delivery tools employed to change energy-related behaviours; insights into the critical success factors that underpin best practice and the barriers to action; and a ‘what works in practice’ overview of the meaningful approaches to change behaviour. [ABSTRACT FROM AUTHOR]