Ordered based on difficulty.

AI for Real-Time Multilingual Communication
Blockchain-Based Universal Basic Income Distribution
Decentralized Autonomous Organizations (DAOs) for Governance
Global Economy Forecasting with Advanced Predictive Models
AI-Driven Personalized Genomic Medicine
AI-Enhanced Brain-Computer Interfaces
Blockchain for Decentralized Power Grids
Restoration of Ecosystems with Intelligent Systems
Quantum Computing for Real-Time Climate Simulation
AI for Space Exploration and Colonization