Upload date
All time
Last hour
Today
This week
This month
This year
Type
All
Video
Channel
Playlist
Movie
Duration
Short (< 4 minutes)
Medium (4-20 minutes)
Long (> 20 minutes)
Sort by
Relevance
Rating
View count
Features
HD
Subtitles/CC
Creative Commons
3D
Live
4K
360°
VR180
HDR
682,208 results
Correction to what I say about trees splitting carbon dioxide: They don't split the molecule, it's rather that they transform it, together ...
686,940 views
2 weeks ago
1,600,000 views
0
3,400 views
50,000 views
689 views
86,000 views
4,100 views