We're implicitly directed to gloss over the contradictory appearances of Boreth in Spirit Walk Book One,
which while building directly on The Farther Shore
also references the events of The Left Hand of Destiny
. So the later Christie Golden books explicitly acknowledge that LHoD happened. No explanation is given for the climate portrayals; we're supposedly just meant to shrug it off as one of those things that happens. But I like Christopher's
"This is our most sacred planet! I want to go hunting there!"
"But, Chancellor, there aren't any lifeforms on Boreth"
"Yes, I desire to hunt in the jungles of sacred Boreth".
*Chancellor gives meaningful look*
. Yes, Chancellor. As you command".