01 / 30BBC Ideas≈ perkiraan levelA23:57–4:03 's , .
02 / 30TED≈ perkiraan levelA29:10–9:14
.
03 / 30BBC Ideas≈ perkiraan levelA25:00–5:05
.
04 / 30BBC Earth≈ perkiraan levelB21:25–1:29
.
05 / 30Big Think≈ perkiraan levelB26:12–6:18
.
06 / 30BBC Ideas≈ perkiraan levelB11:39–1:46
's .
07 / 30CrashCourse≈ perkiraan levelB212:40–12:46
.
08 / 30TED-Ed≈ perkiraan levelB13:36–3:40
, .
09 / 30Big Think≈ perkiraan levelB27:12–7:19
.
10 / 30The School of Life≈ perkiraan levelC10:53–1:05
, .
11 / 30The School of Life≈ perkiraan levelC10:43–0:51
; .
12 / 30TED≈ perkiraan levelB11:16–1:22
, .
13 / 30The Economist≈ perkiraan levelA21:26–1:31
, .
14 / 30The Economist≈ perkiraan levelB24:06–4:17
.
15 / 30Sprouts≈ perkiraan levelB25:53–6:02
— .
16 / 30TED≈ perkiraan levelB13:12–3:17
, ?
17 / 30BBC Ideas≈ perkiraan levelC10:55–1:04
, , .
18 / 30Big Think≈ perkiraan levelB13:49–3:56
, .
19 / 30WIRED≈ perkiraan levelB29:01–9:09
.
20 / 30Sprouts≈ perkiraan levelB17:34–7:42
, , .
21 / 30The School of Life≈ perkiraan levelB12:23–2:30
, %.
22 / 30The School of Life≈ perkiraan levelB12:22–2:29
, %.
23 / 30PBS NewsHour≈ perkiraan levelC13:44–3:51
, , , .
24 / 30TED-Ed≈ perkiraan levelB24:57–5:07
, , .
25 / 30The Economist≈ perkiraan levelC10:40–0:50
, , .
26 / 30The School of Life≈ perkiraan levelB20:13–0:21
, , .
27 / 30Big Think≈ perkiraan levelC110:10–10:18
, , .
28 / 30TED-Ed≈ perkiraan levelC12:41–2:56
— ’s .
29 / 30Big Think≈ perkiraan levelB19:28–9:41
, , , , .
30 / 30PBS NewsHour≈ perkiraan levelB21:09–1:22
, , 's .