Ep 1: Live now Professor Donald Johanson - paleoanthropologist. Ep 2: 15th June. Kayla Iacovino - volcanologist, petrologist and Star Trek fan.

Ep 3: 29th June. Albert Lin - tv presenter, explorer, geographer and technologist.

Ep 4: 13th July. Jaelyn Eberle - mammal paleontologist, studying the Arctic region.

Ep 5: 27th July Gerhard Steenkamp - dental vet operating on big wildlife.

Ep 6: 10th August. Professor David Holland - glacial melt specialist.

Ep 7: 24th August. Ramadan Hussein - Egyptologist and archaeologist.

Ep 8: 7th September. Professor David Montgomery - soil and regenerative farming specialist.