Across

1. Group of ones' equals
6. Tight-lipped is the word
9. Snail mail "sticker"
14. OUR PLANET'S VALUE!
15. "Long ___ and far away"
16. Pertaining to sound
17. Continued from 14-Across
20. Carry on (a trade)
21. Put a stop to
22. Mischievous fairy
25. Clumsy person
27. Private Beetle of comics
32. Pub projectile pastime
35. Attractive's opposite
37. Spain and Portugal, as a peninsula
39. Number 3, in ancient Rome
40. Banknotes featuring George
41. OUR PLANET'S CLOSENESS TO US!
44. 15 year old, give or take 4 years !
46. "Punctuation mark" before a COM
47. Vagrants
50. Charred on the grill
53. Apples go into this wooden box
54. Tail end of a ship
55. 16th birthday celebrant
57. It's this or never!
58. Poem of praise
60. Animal doc
62. OUR PLANET'S PLEA TO US!
71. Burning
72. A stomach or a feeling
73. Very angry
74. Twine maker
75. Abbr. for "Room" (on an address label)
76. Cuddly bear toy

Down

1. US architect I.M. (He designed the pyramid at the Louvre)
2. Do lunch
3. Hesitation sounds (like "uhs")
4. Wearable right from the store rack :abbr.
5. Curly Joe's alternate
6. Hungarian native
7. Grunt of disgust
8. Speck
9. Open shoe with straps
10. Tow boat
11. "Much ___ About Nothing"
12. $1,000,000, informally
13. Pea seed "envelope"
18. World workers' grp.
19. Made to be part of a larger structure
22. Uganda's Amin
23. Fairy queen in Mercutio's speech
24. Warm up the stove first
26. Pretended to attack (as in fencing)
28. Line on a weather map
29. Thin football player?
30. First apple picker!
31. Affirmative
33. Hypnotic state
34. Peccadillo
36. Oinker
38. Document attachments
42. Electrically charged atom
43. Giant mythical bird
44. Waiting to be broadcast  :abbr.
45. Elevated city railroads, informally
48. School assoc.
49. Put needle to cloth
51. It's legal tender in Denmark
52. Make a commitment to
56. It's made to lie on
59. Hatchery tenants
61. Silly person
62. The norm, in golf
63. Flying saucer
64. 15% of the restaurant bill, perhaps
65. Anger
66. After 3 strikes, you're this
67. Mineral in its natural state
68. Very good, informally
69. Letters at the end of a UK corp.
70. Algerian governor, in ancient times