01 / 15Big Think≈ approximate level A20:04–0:14 , , , .
02 / 15TED-Ed≈ approximate level C12:29–2:36
, , .
03 / 15Lex Clips≈ approximate level B21:45–1:50
, , .
04 / 15CrashCourse≈ approximate level A20:50–0:52
-.
05 / 15PBS NewsHour≈ approximate level C10:48–0:53
, 's .
06 / 15The Late Show≈ approximate level A22:09–2:22
, .
07 / 15The Daily Show≈ approximate level A20:00–0:02
.
08 / 15CrashCourse≈ approximate level B20:52–1:01
, , .
09 / 15The Late Show≈ approximate level A22:20–2:22
.
10 / 15WIRED≈ approximate level B15:50–5:54
.
11 / 15TED≈ approximate level C11:16–1:27
, , .
12 / 15The Daily Show≈ approximate level B26:39–6:52
, - , , , , .
13 / 15Lex Clips≈ approximate level C13:07–3:21
, , , , .
14 / 15PBS NewsHour≈ approximate level B20:17–0:25
, , , 's 's .
15 / 15BBC Ideas≈ approximate level C11:03–1:15
, , , .