One of the largest grid computing projects with a row of subprojects in different categories: medicine, chemistry, natural science, technology etc.
Hardware-requirements of the projects can be seen here
Badges are earned by reached computing time:
Bronze = 14 days / 1 day
Silver = 45 days / 7 days
Gold = 90 days / 30 days
Ruby: 180 days
Emerald: 1 year
Sapphire: 2 years
White (with year display): 5, 10, 20, 50, 100 years