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While ambient urban pollution, like Delhi's winter smog, dominates mainstream news, this interview establishes a dramatic, counterintuitive fact: a woman cooking with biomass in a rural kitchen is exposed to PM 2.5 levels that can be as high as 600 µg/m³ (micrograms/cubic metre), roughly 10 times higher than average urban exposures.

Energy equity demands that the poorest populations receive the exact same air quality and health benchmarks as anyone else. Finding the funding for universal LPG access, rather than finding justifications to delay it, is both a public health imperative and an economic necessity. In this episode of the Earth Chakra podcast, Dr Kalpana Balakrishnan, Distinguished Professor, Faculty of Public Health, at Sri Ramachandra Institute of Higher Education and Research, joins host Chetan Bhattacharji.

Drawing on 33 years of field research, Dr Balakrishnan provides a rigorous, evidence-based assessment of household air pollution and the public health impacts of solid fuel combustion across India. Dr Balakrishnan outlines research demonstrating that every rupee invested in providing LPG cooking gas to low-income households yields an estimated 15 to 30 rupees in economic return through avoided mortality, reduced healthcare costs, and carbon emission mitigation.

She shares first-hand experience and empirical findings that dispel common misconceptions regarding rural fuel preferences, showing that rural women eagerly adopt cleaner cooking fuel. But clean fuel adoption is governed strictly by economic price points rather than cultural behaviour. The interview also details the systemic health impacts of particulate exposure - from foetal growth restriction and stunting to cardiovascular and metabolic diseases - while also presenting strategic recommendations to integrate universal LPG attainment targets directly into the National Clean Air Programme (NCAP).

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Beyond Climate Threat: Can nuclear rivals India and Pakistan work together to address their common air pollution?

In this episode of Earth Chakra, former Foreign Secretary Shyam Saran joins the host, Chetan Bhattacharji, to explain why the climate crisis has transformed from an environmental concern into a matter of national security that no border can contain. Ambassador Saran was also Chairman of India’s National Security Advisory Board, the Prime Minister’s Special Envoy for Indo-US Civil Nuclear Issues and Special Envoy and Chief Negotiator on Climate Change.

Key Discussion Points:

The Subcontinent as One: Why South Asia - including Nepal, Bhutan, Bangladesh and Sri Lanka - is a single ecological unit, regardless of political boundaries.

Climate vs. Diplomacy: Why "Net Zero" targets might be a global "sleight of hand" and what it means for India’s development.

The Coal Paradox: Navigating the urgent need for a green transition while meeting India's growing energy demands.

Strategic Autonomy: How ecological degradation challenges India’s capacity for independent decision-making on the world stage.

Why This Matters: This conversation dives deep into the "collective blindness" of regional leadership and why traditional diplomacy is failing to address the shared environmental threats facing future generations. While defence budgets prioritise military hardware and territorial borders, ecological crises like cross-border air pollution, melting Himalayan glaciers, and severe water scarcity are rapidly emerging as hard security threats across South Asia.

The conversation explores why national security and ecological protection are deeply interconnected, and why regional powers must re-evaluate their strategic frameworks. Amb. Saran provides a candid, evidence-based critique of global climate policy, explaining why baseline concepts like Net Zero targets and Carbon Capture technologies function as an institutional "sleight of hand" rather than genuine emissions reduction mechanisms. Drawing on his decades inside high-stakes international negotiations, from the Copenhagen Climate Summit to the Indo-US Civil Nuclear Deal, he details the systemic default of developed nations on climate finance, why India must practice "Nehru's enlightened self-interest," and how climate volatility directly threatens state autonomy.

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Beyond Charity: What are the most effective battery-powered tools to reduce agricultural drudgery for smallholder farmers in India?

This episode analyzes how Stepupify Labs in Bhagalpur, Bihar, is replacing heavy, unreliable diesel engines with a modular, lightweight battery platform designed to lower small farm operating costs by up to 95 percent.

In this episode of the Earth Chakra podcast, Ajit Kumar, the founder of Stepupify and an alumnus of IIT Kharagpur, joins host Chetan Bhattacharji. The discussion evaluates the practical realities of setting up a deep-tech manufacturing unit in rural Bihar to design and distribute lightweight, battery-operated tools tailored specifically for smallholder and women farmers. The founder shares performance metrics demonstrating how a battery-operated power weeder can execute in just one hour weeding work that typically requires four to five man-days of manual labour, significantly reducing fatigue and body posture strain.

The interview explores how a single, modular battery platform makes a portfolio of over twenty tools—including sprayers, reapers, and poultry rakers—economically accessible to rural producers, while addressing major operating issues of conventional imported engines, such as high maintenance, vibration, and emissions.

The conversation also outlines the structural and policy challenges facing rural hardware startups. From using raw, genuine YouTube demonstrations to serve as a digital agricultural extension service to navigating bureaucratic delays in getting new battery-operated categories recognized by state subsidy programs, this episode provides an objective blueprint for scaling social impact ventures outside major tech hubs.

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Beyond Fossil Fuels: How is India building domestic energy storage security using local raw materials like salt?

This episode analyses how a made-in-India sodium-ion battery technology is successfully scaling out of premier labs to de-risk the national energy grid against volatile global supply chains. In this episode of the Earth Chakra podcast, Dr Manjusha Shelke (Chief Scientist, CSIR-NCL) and Dr Vilas Shelke, the founder couple behind deep-tech startup Rechargion Energy, join host Chetan Bhattacharji.

The discussion provides a realistic analysis of translating battery innovations from academic research directly into commercial industrial deployments. The founders share internal cost comparisons detailing the stark economic differences between the chemistries. While they track battery-grade lithium carbonate climbing rapidly from $8,000 to $24,000 per ton in international trade, domestic sodium carbonate inputs remain stable at approximately 700 rupees per kilogram (equivalent to roughly $8 per kilogram). The interview explores the performance trade-offs between the two technologies, detailing why sodium-ion’s safety parameters and longer lifespans present a viable alternative for India’s ₹48,000-crore stationary storage and micro-mobility markets.

The conversation also outlines the structural realities of deep-tech entrepreneurship as a husband-and-wife scientific team. From executing a commercial pilot with the Confederation of Indian Industry (CII) at the Godrej building in Hyderabad to navigating the "valley of death"—the high-risk capital gap between laboratory prototyping and full-scale commercial manufacturing—via the government's Scientist Entrepreneurship Scheme, this episode provides an evidence-based blueprint for scaling public research into national infrastructure.

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Beyond Charity: How do top investors evaluate founders tackling the climate crisis?

Social Alpha founder Manoj Kumar breaks down his framework for picking entrepreneurs who build profitable sustainability solutions, from biomass-powered cold storage to circular economy breakthroughs, designed specifically for India’s most vulnerable heartlands.

In this episode of the Earth Chakra sustainability podcast, host Chetan Bhattacharji marks a decade of Social Alpha's deep-tech social impact with Manoj. Manoj, a veteran corporate banker and institutional trader, shares his journey of stepping away from mainstream financial capital to master an entirely different beast: pricing and underwriting absolute societal risk where traditional markets completely fail.

Through its innovative horizontal lab-to-market architecture, Social Alpha has curated and supported over 400 innovators and written equity checks for many deep-tech startups. He provides an inside glimpse into how their hands-on operating partners deploy game-changing inventions out of premier labs (like IITs, CSIR, and ISRO) directly into rural heartlands across Uttar Pradesh, Jharkhand, Maharashtra, Odisha and many other states.

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Beyond Charity: After losing his father at age 13, an IIT engineer set out to fix a silent crisis: why 1 in 37 rural babies in India don't survive their first year. In this episode of the Earth Chakra sustainability podcast, CareMother CEO Shantanu Pathak joins host Chetan Bhattacharji to discuss a grassroots healthcare revolution that turned a personal tragedy into a lifelong mission.

Shantanu’s journey to fixing last-mile maternal and foetal healthcare reveals how that early loss completely reshaped his life. Determined to prevent other families from suffering from unexplainable, preventable health conditions, he realised that our health is "written in the womb".

This insight drove him to make a radical pivot: after earning a Bachelor's in Engineering, Electronics and Telecommunications from IIT Bombay, he committed his career to maternal care, completing a PhD in Biomedical Engineering at IIT Bombay on women's health. There, he designed and developed sensors for cervical cancer screening, uterine contractions, and mental health with the single goal of moving life-saving tech out of labs and into the market.

He explains how CareMother is deploying an AI-powered, solar-charged point-of-care backpack to frontline workers. This invisible infrastructure has already enabled over 1.5 million tests across 1,000 villages—empowering nurses, midwives, and ASHA workers to predict high-risk pregnancies right at the doorstep.

Beyond the clinical data, this conversation captures the deeply human side of medical innovation. He shares several anecdotes. Like, how a simple technical pivot to solar power saved checkups when basic pencil-cell supplies failed, and how a feature that allowed families to hear and share a foetal heartbeat via WhatsApp completely transformed healthcare adoption in conservative communities. From tracing Shantanu’s time in China's telecom boom to navigating the funding gaps for deep-tech social enterprises, this episode highlights the collaborative ecosystem required to build a national health stack in India and secure equal opportunities of care for the next generation.

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Beyond Petrol Pumps: In this episode, Akshay Shekhar, CEO and Co-Founder of Kazam EV, joins host Chetan Bhattacharji to discuss how a deep-tech infrastructure startup is solving India’s worst battery charging problems. While Kazam doesn't manufacture electric vehicles, they are fundamentally re-engineering how India powers them by building an invisible infrastructure network across 10,000 PIN codes and over 190,000 homes.

From apartment complexes removing basement chargers to complaints about highway ports and massive app clutter, EV ownership has moved way beyond simple "range anxiety". Discover the massive, invisible logistics hustle required to reach remote locations within 24 hours and rewire home grids to make basic charging safe from grid meltdowns and voltage fluctuations.

We dive deep into how Kazam eases power access for EVs through a complete full-stack ecosystem: Hardware: Custom AC and DC solutions built for home, community, and public charging across all use cases. Software for Drivers: Real-time discovery, booking, and seamless payment tracking.

Software for Station Owners: Full control to set tariffs, monitor usage, run marketing campaigns, and manage revenue. Grid Services: Providing critical grid visibility to DISCOMs and enabling peer-to-peer solar trading to slash electricity bills by up to 20%.

We also break down the game-changing Unified Bharat Charge (UBC)—hailed as the "UPI for EV charging"—a digital public good backed by the creators of BHIM/UPI that will finally eliminate the need to download 25 different apps just to juice up your vehicle.

From battling rocky terrain in Rajasthan to drafting the upcoming "Right to Charge" laws for urban housing societies in Delhi, Gurgaon, and Bangalore, this is the story of how deep-tech climate startups are braving long gestation periods to unlock mass adoption and build multi-billion dollar ecosystems.

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Beyond Fossil Fuels: Can an Indian deep-tech startup completely eliminate fossil fuels from global manufacturing?

In this episode, we sit down with Ashish Sethi, one of the three co-founders and CEO of Trigen Decarbonisation, an IIT Madras-incubated company that is rewriting the rules of clean tech and industrial decarbonization.

Industrial heat generation may sound like a boring topic, but it affects each of us because it accounts for a staggering amount of global carbon emissions. While the world has focused heavily on greening the grid with solar and wind, the massive, fossil fuel-guzzling boilers inside factories have remained notoriously difficult to clean up.

Enter Trigen DC. By engineering indigenously built, high-temperature heat pumps capable of breaking engineering barriers, this "Made in India" startup is proving that the future of heavy industry can be entirely electrified, zero-combustion, and highly profitable.

What We Discuss in This Episode: From the Peaks of Ladakh to the Factories of Odisha: Discover the unbelievable versatility of Trigen's tech. Their ultra-low ambient heat pumps are deployed to provide crucial space heating for defence troops in extreme sub-zero conditions (-30°C and below) in regions like Ladakh, while simultaneously delivering localised cooling to dramatically improve working conditions for factory workers facing gruelling heatwaves in places like Odisha.

A Rarity on the Global Stage: Achieving commercial steam and pressurised hot water up to 120°C–145°C via electrical heat pumps is a milestone only a handful of technical organisations worldwide have ever mastered. Ashish explains how Trigen became a global outlier in the deep-tech space.

The Gulf War Catalyst: Why global geopolitical shifts and energy volatility tax are forcing massive industrial clients to drastically advance their timelines for installing clean thermal infrastructure.

The Multi-Million Dollar ROI: How replacing legacy diesel and gas boilers with intelligent, closed-loop heat pump systems cuts energy bills by up to 50%, or even more, saving manufacturers millions while hitting aggressive net-zero and ESG targets. Whether you are passionate about climate action, sustainable manufacturing, or the rise of Indian deep-tech innovations, this conversation offers an evidence-based masterclass in how hardware engineering can solve our biggest environmental challenges.