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Subject
Community
23
Environment
23
Sustainability
21
Well-Being
19
Innovation
14
Health
12
Culture
11
Learning
11
Project-Based Learning
11
Infrastructure
10
Inclusion
9
Extinction: Who Will Survive?
8
Water
6
Food
5
Climate Change
3
Industry
3
Security
3
Energy
2
Recover, Reuse, Recycle
2
Computing
1