Mark spent most of his life working as an esteemed botanist and senior curator in the Natural History Museum in London but his career took a surprising turn which now sees him turning his talent to helping the police crack cases. Mark told Ryan about the work of a forensic botanist.
'Murder Most Florid: Inside the Mind of a Forensic Botanist' by Dr Mark A. Spencer is available now.
If you could write a letter that you have never sent, who would you send it to and what would you say? We want you to write it now and post it to the Ryan Tubridy Show, Donnybrook, Dublin 4. This morning Ryan read some more letters from listeners and spoke to Bernie about the letter she wrote to her daughter Caoimhe.
Star of Downton Abbey and Paddington, Hugh Bonneville, spoke to Ryan about portraying beloved children's author Roald Dahl in the Sky Arts film 'To Olivia' and how he's been helping out with the vaccine roll-out in the UK.
American actor Paul Oakley Stovall plays George Washington in the first national tour of 'Hamilton'. He joined Ryan on the line from Cork to talk about following in the footsteps of historical figure Frederick Douglass as part of plans for a new musical.
Ruth Coker Burks is someone who has defied disapproval in America's Deep South to help and care for men with Aids since the 1980s. She joined Ryan on the line from the US to tell her remarkable story of compassion and combating prejudice.