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National Geographic: Earth's Evil Twin: Millions of years ago, Venus and Earth cut similar figures. Roughly the same size and about the same distance from the sun, their respective evolutions could have followed similar paths. But today, Venus is a seething vision of Hell, its battery-acid atmosphere and incessant, hurricane-force winds masking a blistering volcanic surface. Some scientists wonder if it is a harbinger of what's in store for Earth.

How to Watch National Geographic: Earth's Evil Twin Legally and Safely

If you want to stream National Geographic: Earth's Evil Twin through reputable and legal services, there are a few good options depending on where you are. Subscription platforms like HBO Max, Disney+, Netflix, Amazon Prime Video, and Apple TV+ sometimes carry National Geographic: Earth's Evil Twin films or related DC titles—though availability depends on your country.

If you’d rather not commit to a subscription, there are ad‑supported, free (but legal) platforms such as Tubi, Pluto TV, Peacock or Crackle (where available in your region) that occasionally host superhero films.

Lastly, don’t forget about library‑linked streaming options like Kanopy or Hoopla (if your library or university is registered), and official uploads by film distributors on YouTube—these can also give you legal access to classic movies.