Who decides how long a second is? - John Kitching
5:47
YouTubeTED-Ed
Who decides how long a second is? - John Kitching
Discover how scientists developed atomic clocks, which use the vibrations of atoms to measure and maintain a globally consistent time. -- In 1967, researchers gathered to answer a long-running scientific question: just how long is a second? It might seem obvious at first. A second is the tick of a clock, the swing of a pendulum, the time it ...
2.6M viewsJan 19, 2021
Shorts
First or Second Conditional? English Grammar Practice
17:20
1.4M views
First or Second Conditional? English Grammar Practice
mmmEnglish
Exclusive: Boat sunk in 'double-tap' strike was not headed for the US
8:52
273.4K views
Exclusive: Boat sunk in 'double-tap' strike was not headed for the US
CNN
Film Second Chance
MIDWINTER BREAK - Official Trailer [HD] - Only In Theaters February 20
2:28
MIDWINTER BREAK - Official Trailer [HD] - Only In Theaters February 20
YouTubeFocus Features
4.5M views5 days ago
Meet the Devil Hand. Left-Handed Girl is written and directed by Shih-Ching Tsou, and produced by Shih-Ching Tsou and Sean Baker. Nominated for 2 Critics Choice Awards including Best Foreign Language Film. Watch now on Netflix. | Netflix
0:41
Meet the Devil Hand. Left-Handed Girl is written and directed by Shih-Ching Tsou, and produced by Shih-Ching Tsou and Sean Baker. Nominated for 2 Critics Choice Awards including Best Foreign Language Film. Watch now on Netflix. | Netflix
FacebookNetflix
1.2M views7 hours ago
All You Need Is Kill - Official Trailer
1:48
All You Need Is Kill - Official Trailer
YouTubeIGN
186.4K views1 day ago
Top videos
Sept. 2 boat strike footage shows survivors waving before 2nd attack, sources say
2:46
Sept. 2 boat strike footage shows survivors waving before 2nd attack, sources say
YouTubeCBS News
89.7K views4 days ago
Australia v England 2025-26 | Second Ashes Test | Day Three
8:10
Australia v England 2025-26 | Second Ashes Test | Day Three
YouTubecricket.com.au
2.6M views3 days ago
Australia v England 2025-26 | Second Ashes Test | Day Four
5:33
Australia v England 2025-26 | Second Ashes Test | Day Four
YouTubecricket.com.au
2.5M views2 days ago
Second Chance Movie Scenes
England soundly beaten in Brisbane | TMS Daily Debrief | Ashes Second Test - Day 4
16:14
England soundly beaten in Brisbane | TMS Daily Debrief | Ashes Second Test - Day 4
YouTubeBBC Sport
195.9K views2 days ago
New boat strikes video sparked 'different understandings of what we saw,' senator says
8:12
New boat strikes video sparked 'different understandings of what we saw,' senator says
YouTubeNBC News
193K views5 days ago
Calls grow for video of second U.S. strike on alleged drug boat
2:31
Calls grow for video of second U.S. strike on alleged drug boat
YouTubeCBS Evening News
138.3K views2 days ago
Sept. 2 boat strike footage shows survivors waving before 2nd attack, sources say
2:46
Sept. 2 boat strike footage shows survivors waving before 2nd attac…
89.7K views4 days ago
YouTubeCBS News
Australia v England 2025-26 | Second Ashes Test | Day Three
8:10
Australia v England 2025-26 | Second Ashes Test | Day Three
2.6M views3 days ago
YouTubecricket.com.au
Australia v England 2025-26 | Second Ashes Test | Day Four
5:33
Australia v England 2025-26 | Second Ashes Test | Day Four
2.5M views2 days ago
YouTubecricket.com.au
First or Second Conditional? English Grammar Practice
17:20
First or Second Conditional? English Grammar Practice
1.4M viewsJul 16, 2020
YouTubemmmEnglish
Exclusive: Boat sunk in 'double-tap' strike was not headed for the US
8:52
Exclusive: Boat sunk in 'double-tap' strike was not headed for the US
273.4K views4 days ago
YouTubeCNN
England soundly beaten in Brisbane | TMS Daily Debrief | Ashes Second Test - Day 4
16:14
England soundly beaten in Brisbane | TMS Daily Debrief | Ashes Secon…
195.9K views2 days ago
YouTubeBBC Sport
New boat strikes video sparked 'different understandings of what we saw,' senator says
8:12
New boat strikes video sparked 'different understandings of what …
193K views5 days ago
YouTubeNBC News
2:31
Calls grow for video of second U.S. strike on alleged drug boat
138.3K views2 days ago
YouTubeCBS Evening News
2:00
Tatsuro Taira Octagon Interview | UFC 323
123.6K views2 days ago
YouTubeUFC
7:00
Nebraska vs. Kansas State: 2025 NCAA volleyball second round hig…
29.5K views2 days ago
YouTubeNCAA Championships
7:33
Texas vs. Penn State: 2025 NCAA volleyball second round highlights
23.9K views3 days ago
YouTubeNCAA Championships
4:29:35
FIFA World Cup 2026 draw: LIVE watch party in San Francisco
1.3M views4 days ago
YouTubeAssociated Press
12:18
Second Conditional Sentences + Examples | English Grammar Less…
1.2M viewsMar 27, 2020
YouTubemmmEnglish
6:07
The second conditional - 6 Minute Grammar
148.9K viewsNov 16, 2019
YouTubeBBC Learning English
11:57
NOW: Admiral who ordered second boat strike briefs lawmakers on C…
245.7K views5 days ago
YouTubeMS NOW
17:14
England in tatters after dismal day in Brisbane | TMS Daily Debrief | B…
147.7K views3 days ago
YouTubeBBC Sport
4:06
Notre Dame WITHDRAWS from bowl consideration after being LEFT O…
121.6K views2 days ago
YouTubeCBS Sports
See more videos
Static thumbnail place holder