01 / 14The Economist≈ approximate level B15:07–5:11 .
02 / 14TED-Ed≈ approximate level B21:01–1:11
.
03 / 14TED≈ approximate level B25:57–6:01
, .
04 / 14The Daily Show≈ approximate level A25:37–5:43
.
05 / 14The Late Show≈ approximate level B28:18–8:24
, .
06 / 14The Daily Show≈ approximate level B22:12–2:21
: .
07 / 14The Economist≈ approximate level B25:10–5:19
.
08 / 14CrashCourse≈ approximate level B212:41–12:49
.
09 / 14BBC Earth≈ approximate level A20:42–0:44
.
10 / 14TED≈ approximate level B18:58–9:08
, , 's .
11 / 14The Daily Show≈ approximate level B25:17–5:19
.
12 / 14The Daily Show≈ approximate level B23:48–3:51
, .
13 / 14Big Think≈ approximate level B25:16–5:23
, .
14 / 14Lex Clips≈ approximate level B15:54–6:07
, , , .