You may go to these links below for the recordings of the Orientation Talks,
FB: https://www.facebook.com/NUSFacultyofScience/posts/pfbid07oJxiReq5xj2Tnyu5mBaFe1nKZaz7Q5tahPkq7wdris7AjV7abhgiaDihPc5jRgEl
IG: https://www.instagram.com/p/C9SID9GPxUC