Across 1. Part of I/O 4. DWI fighters 8. Lure 13. Stir up 15. Three in Tübingen 16. Surface smog component 17. Prefix with toxin 18. Opposite of a perp. 19. Man-made acrylic fiber 20. Kite, for one 23. “. . . opened the window and ___ Enza” (gallows humor from 1918) 24. Tibetan antelope 25. “Nobody knows the trouble ___ seen” 28. Greek geometer, literally 33. Doofus 36. ___ in Black 37. Shows disdain 38. ___ with a fine 41. CIA incident 42. 1/1000 of a millimeter 43. In the past 44. Presidential candidate ___ Paul 45. Set of points contained in two or more sets 49. Corp. leader 50. Fort Collins sch. 51. Noxious air 55. Subject of geometry’s most famous theorem 60. Endangered animal, for short 62. Son, often 63. Clothing almost never seen in the singular 64. Troy or avoirdupois 65. Other

66. Unwelcome picnic visitors 67. French painter Edgar 68. Some loaves 69. It may be hot or cold Down 1. Saddam was one 2. Description of a drag 3. Seasoned rice 4. 1506 5. Seed cover 6. Ten-sided plane figure 7. Support for Rush or a previous caller 8. “___ die” 9. Poet Pound 10. Three points determine a triangle unless they are this 11. Lennon widow 12. ¥ 14. Soup accessory 21. Play in which the word robot first appeared (1921) 22. Consumes mashed taro 26. Left-hand page 27. German industrial city 29. “He’s ___” (said of an admired or revered person) 30. Edward, to his friends 31. Airport code for Hengyang, a city of about 7 million 32. Main component of EU, formerly 33. Containing element 76 34. Straighten (alt.) 35. Algebra topic 39. Fix leader? 40. ___ favor 41. An NCO 43. How some angles feel pain? 46. Biblical book 47. German grandmother 48. Part of TMNT 52. Causative factor 53. Online magazine 54. Club for brainiacs 56. Ancient Peruvian 57. ___ into (divides) 58. Reaction 59. Angers 60. Serling of The Twilight Zone 61. Shade