01:30Learning
Can you see the grey box? Sensory adaptation explained by Kit Yates #sciencedemo #optical #sensory
The Royal Institution
The WFP says it has had to use airplanes to transport 50 times more food this year than in the first half of last year. Originally published at - http://learningenglish.voanews.com/media/video/2446391.html
Published 2014-09-18 · Watch on YouTube ↗
Availability and playback restrictions are controlled by the original channel.
01:30The Royal Institution
34:40
45:25
58:58
04:59
33:29
29:29BBC Learning English
Allow Google Analytics to measure visits. Your history stays in your browser. Privacy details