Gesamtlänge aller Episoden: 21 days 9 hours 27 minutes
The gift and power of emotional courage | Susan David
Why I study the most dangerous animal on earth -- mosquitoes | Fredros Okumu
The thrilling potential for off-grid solar energy | Amar Inamdar
The surprising solution to ocean plastic | David Katz
Photos of Africa, taken from a flying lawn chair | George Steinmetz
An economic case for protecting the planet | Naoko Ishii
What comes after tragedy? Forgiveness | Azim Khamisa and Ples Felix