CNN —After feeding the collective fear of heights with “Free Solo,” climber Alex Honnold sets his sights on tackling one of the highest unclimbed cliff faces on the planet, while delivering a climate-change message for good measure. “Arctic Ascent with Alex Honnold” works on both levels (one of them really high up), while making viewers appreciate sitting on a flat, stable surface. Alex Honnold on the glacier in "Arctic Ascent With Alex Honnold." (Granted, Honnold was doing this before “Free Solo” dramatically upped his profile, but as an executive producer of this latest project, he’s made the most out of that since.) “Arctic Ascent with Alex Honnold” premieres February 4 at 8 p.m.

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Persons: Alex Honnold, Alex Honnold ”, Heidi Sevestre, mercifully, Honnold, Hazel Findlay, Mikey Schaefer, Matt Pycroft, he’s Organizations: CNN, Geographic, Disney, El Capitan, Honnold, “, Hulu Locations: Hulu, Greenland, El