This short story is an early work of Clarke's, and it shows. The premise isn't terrible, and the ending is a good combination of cute, surprising, and thought-provoking, but as a story, it's rough.
The plot is divided into two big chunks: the end days of humanity as a global ice age sets in and the discovery of humanity's remaining artifacts by aliens from Venus. The continuity between the two sections is thin and the transition is abrupt, so the pacing doesn't flow well. It ends up being more of a sketch than a compelling plot. The story is also told in a very impersonal, antiseptic third-person voice. Characters are there, but not developed. They're barely described in any sense whatsoever. Clarke simply gives bullet points on their actions in the face of impending doom before moving along to bullet points on the aliens' actions in the post-humanity era. Likewise, there's little aesthetic description.
In combination, all these elements mean there's no emotional connection to anything that's happening. It's the end of the world, and I, the reader, couldn't possibly care less.
The ending is interesting though. At least, it's interesting that in 1949 Clarke was thinking about how humanity would be viewed by outside observers, about how the things we leave behind will shape (or misshape) our legacy, and about some of the challenges of interpreting artifacts from lost cultures in general. It's also a little tounge-in-cheek poke at popular culture, one that has held up very, very well over time.
I don't know that I'd recommend this to casual readers, but if you're a fan of Clarke's, or of science fiction in general, it's worth a quick read.