(in alphabetical order)
(in credits order)
- Steve Koonin(as Professor Steven Koonin)
- Richard Lindzen(as Professor Dick Lindzen)
- William Happer(as Professor Will Happer)
- Nir Shaviv(as Professor Nir Shaviv)
- Matthew Wielicki(as Dr Matthew Wielicki)
- Ross McKitrick(as Professor Ross McKitrick)
- Willie Soon(as Dr Willie Soon)
- Roy Spencer(as Dr Roy Spencer)
- Henrik Svensmark(as Professor Henrik Svensmark)
- Benny Peiser(as Dr Benny Peiser)
- Sallie Baliunas(as Professor Sallie Baliunas)
- Stephen Davies(as Dr Stephen Davies)
Rest of cast listed alphabetically
- Charles Chaplin(archive footage)
- Al Gore(archive footage)
- Greta Thunberg(archive footage)
