18 across Our final frontiers, bear in mind,neither too hot nor too cold for humankind. 10 -5 -o-d-l-c-s -o-e- Looks like first word could be goldilocks with reference to bear and not too hot or...
7 down: The last character to get ardour going down. (4) -e-- The last character is Z. Ardour is zest or zeal?? Don't know if I am completely off track here. 11 Across: What nots we hear. (6) K-U---....