| ABELSON | Philip --, American physicist who co-discovered the element neptunium (7) |
| FRANCISCRICK | Nobelist who co-discovered the structure of DNA |
| THOMSON | J. J. -; discoverer of the electron whose son George co-discovered the diffraction of electrons by crystals (7) |
| FEYNMA | Physicist who co-developed the theory of weak nuclear force |
| ANDERSON | Carl David --, American physicist who won the 1936 Nobel Prize in Physics (8) |
| VANDEGRAFFE | Dr Robert J, American physicist who designed a generator that produces high voltages (3,2,6) |
| CROOKES | William ___, English chemist and physicist who discovered the element thallium in 1861 (7) |
| MACLEOD | John -; Scottish scientist who co-discovered insulin (7) |
| FRANCIS | Crick who co-discovered DNA structure |
| PENZIAS | Physics Nobelist who co-discovered cosmic |
| INSULIN | It was co-discovered by Canadian researchers Banting and Best in 1921 |
| ADAMS | Astronomer and mathematician who co-discovered Neptune; or, the athlete, who in 2012, became the first woman to win an Olympic boxing title (5) |
| LISE | Physicist Meitner who co-discovered nuclear ffssion |
| IRA | Chemist Remsen who co-discovered saccharin |
| HEVESY | George de -; Nobel Prize-winning radio-chemist who co-discovered hafnium in 1923 (6) |
| BANTINGANDBEST | Canadians who co-discovered insulin in 1921: 3 wds. |
| ALANHALE | Astronomer who co-discovered a comet with Thomas Bopp |
| IDA | Chemist Noddack who co-discovered rhenium |
| CURIE | Marie who co-discovered radium |
| RAMSAY | Chemist who co-discovered "idle, without work" argon, "solar" helium, "hidden" krypton", "new" neon and "strange" xenon (6) |
