Earth Action: Harnessing Space Technology for a Sustainable Future

Celebrating Earth Day 2026: Innovations in Climate Monitoring and Public Health

Addressing Food Security: Satellite Data and Locust Swarm Prevention

Protecting Public Health: Early Warning Systems for Mosquito-Borne Diseases

Empowering Communities: Transforming Insights into Action with ESA

Celebrating Earth Day: The Role of Space Technology in Safeguarding Our Planet

Date: 22 April 2026
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Happy Earth Day! As we observe this important occasion on April 22, it serves as a global call to action to protect our planet. At the European Space Agency (ESA), this commitment starts in orbit, where our satellites provide a continuous, holistic view of Earth, allowing us to track environmental changes and respond effectively to imminent threats. Here are two remarkable applications of space technology demonstrating how we can anticipate and address climate challenges, especially concerning food security and public health.

Using Satellite Data to Prevent Locust Swarms

Desert locust outbreaks threaten the food security of millions in East Africa. These swarms can devastate crops within hours, but satellite-based Earth observation is changing the narrative. Today, advanced technology enables early detection of locust breeding conditions, allowing authorities to take action before swarms take flight.

Speed is crucial when combating locusts. The best control strategy targets wingless juveniles—known as hoppers—before they gain the ability to fly. Traditional ground surveys can be slow and labor-intensive, often hampered by remote or insecure terrains, allowing these outbreaks to escalate into crises.

As part of ESA’s Earth Action initiative, the FutureEO program co-developed an Earth observation-based early warning and forecasting system with VITO Remote Sensing, the Intergovernmental Authority of Development (IGAD), and the World Bank. Powered by Copernicus Sentinel satellite data, this system delivers location-specific alerts every 10 days via the East Africa Hazards Watch platform, enabling authorities to prioritize interventions and assist farmers facing potential crop losses.

The results have been striking. Outbreaks have become less severe, and targeted actions have led to a significant reduction in insecticide use—down to approximately 6,000 liters annually in Ethiopia, compared to more than 1.1 million liters during major outbreaks from 2019 to 2021. The high-resolution imagery from Copernicus Sentinel-2 aids in mapping vegetation growth and crop damage, while Sentinel-3 monitors rapid changes linked to rainfall, a vital factor in locust breeding.

A New Frontier in Public Health: Early Warnings Against Mosquito-Borne Diseases

As climate change accelerates the spread of mosquito-borne diseases, satellite-driven early warning systems are proving indispensable for health authorities. In collaboration with UNICEF, ESA has developed a digital platform that leverages Earth observation data combined with machine learning to predict and prepare for outbreaks of diseases like dengue and malaria weeks in advance.

The urgency is palpable, as dengue affects around half of the world’s population, leading to an estimated 100–400 million infections annually according to the World Health Organization. With enhanced foresight, countries can take proactive measures to reduce illness, fatalities, and the pressure on already-stretched health systems—especially in vulnerable regions.

Central to this effort is the Disease Incidence and Resource Estimator (DIRE), crafted by ESA’s Φ‑lab in partnership with UNICEF. This tool integrates machine learning with environmental data to model how climate and geography influence disease transmission, enabling accurate predictions of imminent outbreaks.

The visual risk maps and actionable guidance generated by DIRE are empowering health authorities to identify high-risk areas, prepare clinics, mobilize staff, and allocate vaccines and fumigation resources effectively. Pilot studies in Brazil and Peru, significantly impacted by dengue, have shown that this model surpasses previous prediction methods. Not surprisingly, it was recognized as one of UNICEF’s top research initiatives in 2022 and included among UNESCO’s Top 100 AI solutions advancing the Sustainable Development Goals.

Driving Action from Space

From protecting harvests to bolstering public health, these examples illustrate that satellite data now serves a critical role beyond mere observation; it impacts timely, targeted action at the grassroots level. As the climate crisis escalates, developing the capacity to anticipate risks and respond proactively is essential for building global resilience.

By combining cutting-edge satellite technology with robust partnerships and open data access, ESA is empowering communities to not merely react to a shifting planet but to stay ahead of challenges. As ESA’s Director of Earth Observation Programmes, Simonetta Cheli, aptly put it, “This Earth Day, we are reminded that solid evidence is the foundation of effective action to protect our planet. ESA will continue to observe the Earth, strengthen scientific understanding and ensure that space-based knowledge informs policy, resilience, and sustainability for the benefit of society.”

As we celebrate our planet today, let’s recognize the power of technology and collaboration in shaping a sustainable future. Happy Earth Day!