| JOHNMUIR | Scottish naturalist known as the Father of National Parks (4,4) |
| MUIR | Naturalist known as "John of the Mountains" |
| MAGENTA | Colour of National Park boundaries on Explorer maps (7) |
| GENETICS | German friar and scientist Gregor Mendel is known as the father of ___, thanks to his pea plant experiments which established the rules of heredity |
| LINNAEUS | 18th century Swedish botanist known as 'the father of modern taxonomy' (8) |
| TAXONOMY | Carl Linnaeus, known as the "father of modern ___" |
| YOSEMITE | One of the USA's best-known national parks. (8) |
| DARTMOOR | Most southwesterly of the UK's national parks |
| DARWIN | Charles _, English naturalist known for the theory of biological evolution (6) |
| GAVINMAXWELL | Scottish naturalist; author of 1960 autobiographical volume Ring of Bright Water (5,7) |
| NEILLIA | Genus of the botanical family Rosaceae, named after an 18th century Scottish naturalist (7) |
| NORTHERN | Australia's Kakadu National Park's location, the ... Territory |
| WILDLIFE | That which is protected in Canada's national parks |
| SCOTLAND | Nation which had no national parks until 2002 |
| GAVIN | Scottish naturalist who introduced us to Mijbil the otter in Ring Of Bright Water, ... Maxwell |
| HESIOD | Writer of the 8th century B.C. known as the father of Greek didactic poetry, noted for works including the Theogony and Works and Days (6) |
| HERODOTUS | Greek historian of the 5th-century BC known as The Father of History |
| ENDERS | Known as the father of modern vaccines, one of three scientists who shared the Nobel Prize in Physiology or Medicine in 1954 (6) |
| DJKOOLHERC | *He's known as the Father of Hip-Hop; other inductees include George Michael, Willie Nelson, Rage Against the Machine, The Spinners, Link Wray, Al Kooper, Bernie Taupin, and Don Cornelius |
| TELLER | Physicist known as the 'Father of the Hydrogen Bomb,' born 1/15/1908 |
