All the presentations were in Slovenian yesterday. I assume there will be official videos with subtitles.

Here is a live stream recording. Luka's speech starts at 4:22:40.
https://livestream.com/zivo/TEDxLjubljana2019/videos/198974115?fbclid=IwAR1E_PbaTcKKcO_c1tyNDKh4XRepn3IcyqWk-jQswiHH8Ea7oBi3YG0QWLA