Sustainable practices for resource management (water, energy, waste) part 1
24:10
Sustainable practices for resource management (water, energy, waste) part 2
38:51
BSW: The new party disrupting German politics | Berlin Briefing Podcast
3:09
Vast dinosaur footprints found in quarry date back 166 million years | BBC News
10:28
Sustainable tourism zoning and indicators and visitor management strategies, Part 2.
58:20
Think Fast, Talk Smart: Communication Techniques
10:09
Ecotourism and nature-based tourism. Part 2.
2:37:02
kingdom of plants - Sir David Attenborough
1:55:27