Research Library

This is one of the foundational paper for Terralab’s core methodology: it demonstrates that psychedelics and nature contact reduce Default Mode Network activity, decrease rumination, enhance connectedness and increase mindfulness — via the same neural mechanisms. The synergy is not incidental; it is structural. Nature amplifies psychedelic outcomes precisely because both work on the same underlying system. This paper is the scientific basis for why Terralab focus on nature as an active co-facilitator rather than a scenic setting.

A comparative study across classic psychedelics finding that psilocybin — uniquely among them — reliably predicts lasting increases in nature relatedness, persisting from two weeks to two years after the experience. This is significant in two directions: it explains why psilocybin is Terralab’s primary focus, and it connects the practice to a broader question about what we lose when professional life becomes increasingly separate from the natural environment. Reconnection with the natural world is not a side effect — it is a measurable core outcome.

Demonstrates that where a psychedelic experience takes place matters — specifically, that access to nature during a session predicts better outcomes in nature relatedness. This is the ‘set and setting’ finding applied to natural environments: not merely that nature is pleasant during an experience, but that it actively shapes what the experience produces. For Terralab’s design philosophy, these are foundational elements of the programme — location, pacing, movement, silence — is chosen to maximise nature’s active role.

A tightly controlled study showing that a 90-minute walk in nature reduces both self-reported rumination and activity in the subgenual prefrontal cortex — the brain region associated with depression and habitual negative self-referential thought. The urban walk control group showed no such reduction. For senior professionals who spend the majority of their working lives in urban environments, this study names a specific neurological cost — and shows that even a single 90-minute nature exposure begins to reverse it.

A systematic review confirming positive effects of immersive nature experience on mental, physical and social health across diverse population groups. The breadth of the finding matters: these effects are not limited to a specific demographic or clinical condition. For a professional audience, this review contextualises individual studies within a broader pattern of evidence — making the case not just that nature occasionally helps, but that sustained nature immersion reliably produces measurable improvements across multiple dimensions of health.

The foundational theoretical framework explaining why nature restores cognitive capacity: nature engages involuntary attention (fascination) without effort, allowing directed attention — the resource depleted by sustained cognitive work — to recover. For leaders whose working lives are defined by demands on directed attention, Attention Restoration Theory provides a structural explanation for why time in nature is not a luxury but a professional necessity. It is the cognitive science behind what Scandinavian cultures have always practiced intuitively.

The Nacadia programme at the University of Copenhagen is one of Europe’s most rigorously validated nature-therapy models — a 10-week programme for stress-related illness with documented outcomes. Its existence in Denmark is significant: it establishes that nature-based therapeutic practice is not an import but a native tradition with serious academic roots in this country. Terralab’s work builds on this foundation while extending it into a professional development context for functioning leaders rather than those in crisis.

A survey of over 1,100 Danish companies finding that personality, values, selvindsigt (self-insight) and resilience are now the most prioritised traits in leadership hiring — explicitly ahead of previous results, industry knowledge and professional networks. 45 % percent of recruiters identify thorough self-reflection as the most positive candidate behaviour. The article offer an perfective of what the market needs and is not getting from conventional development.

The definitive Danish quantification of the cost of stress: DKK 16.4 billion annually, representing 61.9 million lost work hours. This figure makes the business case for investment in genuine resilience development impossible to dismiss. For the CFO or board member sceptical of ‘inner work,’ this number reframes the conversation: the cost of not addressing inner sustainability is already being paid, at scale, every year.

A survey of 1,623 Danish managers finding that 24% report experiencing stress often or always. The significance of this figure is not the number alone but who it describes: these are the people responsible for leading others — making decisions under pressure that affect teams, organisations and families. A leader operating under chronic stress is cognitively and relationally impaired in ways that conventional performance management does not address. This data establishes the scale of the problem Terralab addresses at the level of senior professional populations.

The IDG framework maps five dimensions of inner development — Being, Thinking, Relating, Collaborating, Acting — and argues that outer sustainability goals cannot be achieved without addressing the inner capacities of the leaders pursuing them. Developed in Scandinavia alongside the UN Sustainable Development Goals, it provides a structured vocabulary for what Terralab delivers: not personal growth as an end in itself, but the inner development that makes systemic, sustained outer impact possible. The connection to Terralab’s concept of inner sustainability is direct.

The book that brought the psychedelic renaissance into mainstream professional discourse — written by a sceptical journalist who became a subject of his own investigation. Pollan’s synthesis of the science, history and phenomenology of psychedelics is the most accessible entry point for a professional audience approaching these ideas for the first time. It is not a polemic or an advocacy text: it is a rigorous and honest exploration of what the evidence shows and what the experience means. For those new to this territory, it is the natural first read before engaging with the primary research. Danish edition: Din foranderlige bevidsthed

The foundational ethnobotanical text on the worldwide role of psychoactive plants in human culture — co-authored by the discoverer of LSD and Harvard’s foremost ethnobotanist. It documents more than 90 indigenous Amazonian traditions, as well as practices across Africa, Asia and the Americas, showing that every major human civilisation developed some relationship with plant medicines as tools for healing, community, wisdom and encounter with the unknown. For Terralab, this is not historical curiosity: it establishes that what modern science is rediscovering, human beings have practised continuously for millennia.

Muraresku builds a fascinating researched argument, drawing on archaeological chemistry, classical scholarship and Vatican archives, suggesting that the Eleusinian Mysteries and early Christianity both used sacramental substances as vehicles for direct encounters with the divine — often facilitated by female priests. What makes the book significant is not only its historical claim, but the distinction it surfaces: the difference between being told about truth and experiencing it directly. It points to two fundamentally different ways of knowing. For leadership, the implication is precise: without experiential depth, insight risks becoming abstraction. And in a context of increasing complexity, abstraction is no longer sufficient.