You can only save one— who do you choose? – Doug MacKay Click Cancel Mute Play next after 5 s You can only save one— who do you choose? – Doug MacKay | 2 years ago 1.4K | 2 years ago | Popular science 1.1K Share TED·Ed Follow
02:39 Left Ventricular Assist Device | LVAD | Nucleus Health Nucleus Health Videos 4.3K | 2 years ago
09:08 How Did China Come To Be: A geographic perspective | 中国从哪里来？——以地理的视角 Institute for Planets 450 | 2 years ago
05:54 What’s Up With the Weird Pockmarks Up and Down the East Coast? SciShow channel 3K | 2 years ago
10:06 How America’s Oldest Drum Factory Stayed In Business For Over 160 Years | Still Standing ScienceInsider 4.5K | 2 years ago
.jpg){kind=avatar}
.jpg){kind=avatar}
.png){kind=avatar}