Cryptic crossword No 3,760

Across

1. Zero information about unknowns but something in the air (6)
2. Large injection makes Muppet scientist more desolate (7)
3. Often ask if poles have been swapped in arch (10)
4. A fan of patchy horse? No pressure (4)
5. Mom's tear upset little monkey (8)
6. Other worldly puny ruler's a shambles (11)
7. Princess Fiona, say, to make headway without publicist (6)
8. Make good losses apropos takeover (6)
9. Hot young legless spirit drinks another one, cold and pure (8)
10. Accomplished academic gets prize at last (4)
11. Extraordinary reflection... fit! (10)
12. Film composer's supporting frames (7)
13. Second faction cutting grass (6)

Down

1. Museum also restored ossuaries (10)
2. Diary: "Day in France nice although lost at first" (7)
3. Lipread every other question in country (4)
4. Plants that food samplers lose head for (6)
5. Minimise drama, drink quickly (4,4)
6. Show admiration for dramatic treatment before rewinding Brief Encounter (6)
7. For essential oil need rose and lime all cut in half (6)
8. Kind elder ancestors found here (6,4)
9. From temper or spite get people like Caligula (8)
10. Midlands team, say, to turn around rural community (7)
11. Author of Money, a short film (4)
12. Mr Bennett - maybe initially glacial - obviously reckons Darcy's OK now (6)
13. Dignified in setting for aristocratic 5d (7,4)