Daniel S. Nevins

Which is why many observant Jews may be buying new clothes this year and also taking those clothes to a Shatnez tester, an expert who can guarantee that their clothing is kosher, that is Shatnez free.

It's a fascinating tradition and to help us understand it we are joined by Rabbi Danny Nevins, Senior Rabbi of New North London Synagogue, the largest Masorti congregation in in the UK, whose new book, Torah and Technology Circuits, Cells and Sacred Path, addresses the issue of mixed species.

Rabbi, good morning.

Good morning.

We call it pikuach nefesh.

But if the goal of gene editing is simply aesthetic, like enhancement therapy to try to make a person look different, to be taller, say, or different colored eyes, then that would truly be problematic.

Rabbi, thank you very much, Rabbi Danny Nevins.

This Wednesday marks the centenary of the birth of John Coltrane, the jazz saxophonist, who found faith in music inspired by the Sufi mystic Hazrat Inayat Khan.