Every word required for this puzzle appeared in a Science News article during 2004.
If you need a hint, check the print article by going to the volume and page number listed after each clue or find the online version of the article by clicking on the link. An asterisk indicates that the article is available free to all visitors to Science News Online. Subscribers who have registered and signed in have access to all the articles.
Across
1. Cassini destination (166: 22)
5. Does more than fetch (165: 371*)
7. Hard to pack in some dimensions (166: 219*)
8. The stuff out there (165: 7*)
12. Molecule of life (165: 55)
13. Blood cancer (166: 38)
15. Night-flying mammal (165: 373)
17. Busy pollinators (166: 125)
18. Spicy aid for diabetics (165: 283*)
21. Big, aggressive seabird (165: 115)
24. Legendary ring structure (165: 342*)
25. Flu-shot target (166: 307*)
29. Titan’s may be made of methane (166: 328*)
30. Slipping on water (165: 54*)
33. Engine in hypersonic plane (165: 213*)
36. Mixture of rotted plants and food (166: 173)
39. Planet’s satellites (166: 115*)
42. Divisible only by itself and 1 (165: 260)
43. Makes dough rise (166: 116)
44. Cellular disease (165: 180)
Down
1. Student science competition, abbrev. (165: 182*)
2. Green or black beverage (165: 382)
3. One class of fundamental particles (166: 186*)
4. Young star: _____ Pictoris (166: 227*)
6. Parts of chromosomes (165: 195)
9. Oily, toxic pollutant, briefly (166: 77)
10. Domestic genome challenge (166: 109)
11. Possible human ancestor? (165: 328*)
14. Lethal blood infection (165: 6)
16. Ancient puzzle analyst (165: 314*)
18. Recent diet target (166: 40*)
19. Protective shell (166: 298)
20. Peace-promoting primate (165: 243*)
22. Carbon sheet, one atom thick (166: 259*)
23. Can be saturated (166: 238)
26. Atom minus an electron (166: 94)
27. Brain cell (165: 51)
28. Microscopic glassmaker (166: 42)
31. Electronic organizer, briefly (165: 374*)
32. Lizard with night sight (166: 342*)
34. Dark, flying scavenger (165: 197*)
35. Plague-spreading medieval cure-all (165: 222)
37. Abnormal growth in body (165: 61)
38. Appendage for swimming (166: 154*)
40. Nobel prize month, abbrev. (166: 229)
41. Body of salt water (166: 99)
