Ayaz Khan Lohani
Before looking to the stars, humanity must learn to live on Earth.
That is the central message of How to Live on Earth, a compelling feature documentary that challenges humanity’s growing fascination with space colonization while asking a more urgent question: why look for another planet when we have yet to learn how to protect our own?
Narrated and presented by acclaimed actor Benedict Cumberbatch, the film combines breathtaking visuals, environmental science, indigenous knowledge and stories of human resilience to make a persuasive case for a different relationship between humanity and nature. Featuring the insights of climate activist Xiye Bastida, biologist Dan O’Neill and former White House chef Sam Kass, among others, it moves beyond familiar warnings about ecological destruction to explore practical ways of building a more sustainable future. An evocative score by Hans Zimmer and Jacob Shea reinforces the film’s emotional depth and sense of possibility.
Rather than leaving viewers overwhelmed by the scale of the environmental crisis, the documentary asks them to imagine what humanity could achieve by working with nature instead of against it.
The Cost of Forgetting Nature
The documentary opens with a striking example of the unintended consequences of human progress. Fruit farmers in China are forced to collect pollen and pollinate flowers manually after the widespread use of pesticides contributes to the decline of natural pollinators.
The scene captures a fundamental contradiction in modern development: human activity damages the natural systems on which agriculture depends, creating costly technological and manual substitutes for services that nature once provided.
From there, the film examines the interconnected relationships that sustain life. Elephants help maintain African savannahs, fungi connect trees through underground networks, and wildlife contributes to the health of forests and water systems. These examples demonstrate that an ecosystem is far more than the sum of its individual species.
The documentary’s central argument is that nature should not be valued solely for what humans can extract from it. The ecological contribution of an elephant, for instance, extends far beyond the commercial value of its ivory. Its role in maintaining the landscape helps sustain an entire web of life.
This perspective challenges an economic model that frequently treats forests, rivers and wildlife as commodities while overlooking the systems that make human prosperity possible.
Feeding Humanity Without Destroying the Planet
One of the documentary’s most compelling sections examines the relationship between food production and deforestation, particularly in the Amazon rainforest.
Through the experiences of farmers in Brazil, the film illustrates how the global appetite for meat contributes to the conversion of forests into cattle pasture. Yet it avoids portraying farmers as the sole villains. Many clear land because livestock offers a means of supporting their families and securing their children’s futures.
This distinction is important. Environmental destruction is not always the result of individual indifference; it can also reflect economic incentives that reward immediate production while failing to account for the long-term value of living ecosystems.
The documentary explores alternatives, including regenerative agriculture, cacao cultivation under tree cover, plant-based foods and innovative proteins produced through fermentation and fungal systems. These approaches suggest that food security and environmental protection need not always be competing objectives.
The film does not demand that everyone abandon meat. Instead, it encourages a broader reconsideration of how food is produced and consumed, demonstrating how alternative proteins and more sustainable farming practices could reduce pressure on natural habitats.
Its message is particularly relevant to a world facing the combined challenges of population growth, climate change and food insecurity. The question is no longer simply how to produce more food, but how to feed humanity without consuming the ecological foundations of its future.
Indigenous Wisdom and the Economics of Nature
Perhaps the film’s most important contribution is its recognition that technological progress alone cannot solve the environmental crisis. Humanity must also recover a sense of responsibility towards the natural world.
Through the experiences of indigenous communities in Mexico and North America, the documentary highlights traditional knowledge rooted in the understanding that human well-being depends on the health of the wider environment.
Climate activist Xiye Bastida offers a particularly powerful perspective on this relationship. Drawing on the wisdom passed down through generations, she describes a worldview in which the well-being of communities cannot be separated from the land and water that sustain them.
The documentary contrasts this approach with an economic system that places an explicit price on timber, minerals and agricultural products but often assigns little or no financial value to living forests, clean rivers and functioning ecosystems.
Its proposed response is to make nature’s contributions visible in economic decision-making. Through the concept of natural asset companies, the film explores how forests, wetlands and other ecosystems might generate income through their contributions to carbon storage, clean water, soil fertility and flood protection.
The idea offers an intriguing possibility: communities could earn sustainable returns by protecting their natural assets rather than selling their land for immediate profit.
However, this proposal also raises important questions. Can the complexity of nature be adequately represented by monetary values? Who determines those values, and who benefits financially? Without appropriate safeguards, the financialisation of nature could create new opportunities for exploitation.
The documentary is most persuasive when it presents economic innovation as a means of supporting conservation, rather than suggesting that markets alone can resolve the environmental crisis.
Restoration Is Possible
The film’s optimism gains credibility from its accounts of practical environmental restoration.
One of its most powerful examples is the removal of four dams on the Klamath River in the United States following a prolonged legal and political struggle. The dams had obstructed salmon migration and contributed to ecological problems, including a devastating fish die-off.
Their removal represents more than an engineering achievement. It demonstrates the possibility of reversing environmental damage and restoring the relationship between a river, its wildlife and the communities that depend on it.
For indigenous communities, the return of salmon also carries profound cultural significance. The river is not simply a resource; it is part of their history, identity and collective life.
The documentary extends this message to coral reef restoration, where scientists combine the cultivation of resilient corals, the protection of young fish and underwater soundscapes designed to attract marine life. Such initiatives illustrate how scientific innovation can work alongside natural processes to help ecosystems recover.
These stories provide a welcome alternative to environmental narratives dominated by catastrophe. They do not suggest that restoration is easy or that every ecosystem can be recovered without limits. Instead, they demonstrate that informed collective action can produce meaningful change.
Nature and the Human Condition
Another distinctive feature of the documentary is its exploration of nature’s relationship with mental health, rehabilitation and urban life.
Its account of prisoners caring for sick turtles is especially moving. The experience gives participants a sense of responsibility and connection, while encouraging empathy towards vulnerable living creatures. The film suggests that caring for nature can also help people rebuild aspects of themselves.
The documentary also examines forest-based program in South Korea and Singapore’s integration of greenery into urban planning, public spaces and healthcare facilities.
These examples challenge the assumption that nature is primarily a recreational luxury. Access to green spaces and healthy natural environments should be understood as part of a broader approach to human well-being.
As urban populations grow, this argument becomes increasingly important. Cities need not be designed in opposition to nature. With thoughtful planning, they can accommodate both human activity and thriving ecosystems.
From Intelligent to Wise
The documentary ultimately presents humanity as standing at a turning point. We have acquired extraordinary scientific and technological capabilities, yet our ability to transform the planet has frequently outpaced our willingness to consider the consequences.
Its vision of humanity becoming a community of “global gardeners” offers an alternative to the idea that economic progress must come at nature’s expense.
Nevertheless, the film occasionally gives greater emphasis to the promise of solutions than to the political and economic barriers standing in their way. Governments, corporations, investors and communities have competing interests, and environmental reforms can impose unequal costs. Financial innovation, alternative proteins and ecological restoration will require effective policies, accountability and sustained public support.
A deeper examination of these challenges would have strengthened the documentary’s already compelling argument.
Even so, its emphasis on actionable hope is one of its greatest strengths. The film does not ask viewers to ignore the crisis. It asks them to recognize that the future remains open to change.
Verdict: A Documentary Worth Watching
How to Live on Earth is a visually compelling and intellectually engaging exploration of humanity’s relationship with the natural world. By connecting biodiversity, food security, economics, indigenous knowledge, mental health and ecological restoration, it presents environmental protection not as a narrow conservation issue but as a fundamental question about the future of civilization.
Its central insight is both simple and profound: nature is not separate from the economy or human society. It is the foundation upon which both depend.
The documentary’s proposed solutions deserve critical examination, particularly where financial markets are presented as instruments of conservation. Yet its broader message remains persuasive. Humanity cannot secure its future by endlessly extracting resources from the planet while neglecting the systems that sustain life.
The real measure of progress may not be how far we can travel into space, how much we can extract from the Earth or how rapidly we can expand production. It may be whether we can learn to use our intelligence with greater humility, foresight and responsibility.
Before humanity dreams of establishing a permanent home on Mars, it must confront the consequences of its actions here on Earth.
The challenge is not simply to survive on our planet. It is to become a force that helps it flourish.
