01 / 16CrashCourse≈ approximate level B18:40–8:45 , .
02 / 16StoryCorps≈ approximate level B10:21–0:25
.
03 / 16CrashCourse≈ approximate level B26:32–6:37
, .
04 / 16CrashCourse≈ approximate level B15:27–5:33
.
05 / 16TED-Ed≈ approximate level C10:39–0:49
.
06 / 16CrashCourse≈ approximate level C16:23–6:32
, , , .
07 / 16The Economist≈ approximate level A20:48–0:56
, .
08 / 16The Economist≈ approximate level B13:22–3:29
.
09 / 16CrashCourse≈ approximate level C12:54–3:00
, - .
10 / 16CrashCourse≈ approximate level B14:45–4:51
% , , .
11 / 16NBC News≈ approximate level A20:35–0:39
.
12 / 16CNBC Make It≈ approximate level B27:28–7:37
, $ , , .
13 / 16CrashCourse≈ approximate level B24:59–5:05
, .
14 / 16PBS NewsHour≈ approximate level C10:29–0:37
: .
15 / 16NBC News≈ approximate level C10:11–0:22
.
16 / 16Big Think≈ approximate level B21:44–2:03
, , , , .