3. Type of lizard
15. What is given in the classroom
26. Anagram of 5th & 6th words gives a film
27. The 2 main political parties make this a place where scientists work
48. Initials of a London museum in a difficult environment gives a US university.
53. Someone who works in a surgery + anagram of the clue as the last 3 letters.
61. Anagram of 1st and 3rd words.
All of these have been given very explicit clues previously and quite a few can also be found in The Answer Bank.