In my summertime study of How Things Change, this podcast featuring Cory Doctorow and the Titanium Physicists has proved invaluable. Titled Death and Heat Death, this long-form happy mutant conversation includes Goblin Milk, multiverses, infinity, mortality and identity, and how to explain to a child that their father is dying.
UPDATE: Forgot to note that there's also an explanation that tidying one's room actually increases entropy in the universe.