The REE program accepts a diverse range of project scales from small, exploratory projects to large scale investigations with a broad, systemic scope; project budgets should match the project scope. Small-scale, exploratory projects with high transformative potential are strongly encouraged. The estimated number of awarded proposals is based on a projected average funding level of approximately $100,000 per project per year. All PIs should discuss the budget of proposed projects with a cognizant program officer before submission.