Announcing the Winners of the DEV Weekend Challenge: Earth Day Edition 🌍
The time has come! We are thrilled to announce the winners of our second DEV Weekend Challenge: Earth Day Edition.
We were blown away by the creativity, craftsmanship, and care that went into your submissions. You gave the planet a voice through dashboards, AI tools, immersive simulations, and stories that made us think differently about our relationship with the natural world.
Thank you to everyone who participated. Now, let's celebrate our winners! 🎉
🏆 Congratulations To...
Overall Winners
Unearthed
@anchildress1 took us deep underground to examine the fossil fuel systems quietly powering our homes and cities. The post weaves together personal narrative and technical research to reveal the environmental cost hidden behind every flipped light switch. It's a sobering reminder of how much remains out of sight.
Last Breath
@_boweii built an app that uses sound to detect which species are vanishing from your local green spaces. The project combines audio recognition with ecological data to surface biodiversity loss in a way that's immediate and personal. It's a unique approach to environmental storytelling through audio.
Energy Leak Scout
@afreen_hossain_16f9999ebc built a home energy auditing tool that helps users identify where they're losing energy and money. The app is polished and well-documented, with a clear focus on making sustainability actionable for everyday people. We loved how it encourages positive changes with real financial incentive.
CrowdCommand
@aashitanegii tackled a problem that doesn't get nearly enough attention: the enormous resource waste generated by large-scale events. CrowdCommand uses AI to model crowd movement and reduce inefficiencies in real time, from energy use to physical waste. It's an ambitious, well-executed project with clear potential for real-world deployment.
Prize Category Winners
Best Use of Backboard - Terra Triage
@arqamwd built an app where you snap a photo of an injured animal and the right licensed wildlife rehabilitator gets paged within 60 seconds. The secret is in the memory: every accept, decline, and "at capacity" response is written to Backboard, and that data directly re-ranks who gets contacted next — it's the core mechanism that makes the dispatcher smarter with every case.
Best Use of Auth0 for Agents - GreenGate
@jtorchia built a sustainability auditing tool that puts the human firmly in the loop by requiring phone-based approval before any agent action is taken. The project makes clever use of Auth0's CIBA flow to create a secure and accountable agentic system. It's a compelling proof of concept for responsible AI agent design.
Best Use of Google Gemini - EcoScan
@temiloluwavalentine built a tool that scans your devices and surfaces exactly which ones are consuming the most energy and driving up your bills. Gemini powers the analysis, turning raw usage data into clear, actionable insights for users. The result is a sharp, focused tool that makes energy waste visible in a way that actually motivates change.
Best Use of Snowflake - SQLgo
@mohammad515253 approached sustainability from an unexpected angle: the carbon footprint of inefficient database queries. With Snowflake at the core of the data layer, SQLgo analyzes query patterns and redundant storage to help developers reduce computational waste. It's a clever reframe that makes sustainability relevant to anyone who writes code.
Best Use of GitHub Copilot - Planetary Pulse
@mamoor_ahmad built a sweeping Earth monitoring dashboard that pulls together environmental data from multiple sources into a single, unified view. Copilot handled Express route scaffolding, the animated CSS globe, the SVG health ring, the IPCC-calibrated carbon calculator logic, and responsive layout breakpoints, shaving an estimated 8.5 hours off the total build time. The post makes a compelling case for Copilot as a genuine force multiplier on ambitious solo builds.
Best Use of Solana - EcoLens
@arya_koste_5845807df94776 created a system for recording carbon reduction pledges on-chain, making climate commitments transparent and verifiable. An AI layer backs up each pledge with research and accountability tracking, so the promises people make are grounded in real data. It's an inventive use of blockchain for something that goes well beyond speculation.
Prizes
All ten winners will receive:
- $100 USD
- DEV++ Membership
- Exclusive DEV badge
All participants with a valid submission will receive a completion badge. 🏅
What's Next?
Stay tuned for upcoming challenges by following this tag:
#devchallenge
We hope you had fun, felt challenged, and maybe added a thing or two to your professional profile.
See you next time!