Nobel Prize-winning Australian-American biochemist and molecular biologist Elizabeth Blackburn is best known for co-discovering the enzyme telomerase. She was allegedly removed from the American President's Council on Bioethics over her support for stem cell research, which went against the government. She has honorary doctorate degrees from Harvard, Yale, and Princeton.

Tim Flannery is an Australian paleontologist, mammalogist, environmentalist, explorer, conservationist, and public scientist. Tim Flannery is credited with discovering over 30 mammal species. He is also credited with co-founding Climate Council, a non-profit organization that aims at providing accurate information on climate change to the Australian public. In 2007, Tim Flannery was named Australian of the Year.

Known for co-developing the concept of a sustainable form of agriculture called the permaculture, Bill Mollison was one of the most influential ecological pioneers, authors, and teachers. Also the founder of The Permaculture Institute (Tasmania) and co-publisher of a book called Permaculture One, he is credited with training thousands of people the art of growing food without harming the nature.
Renowned immunologist Gustav Nossal was born in Vienna but later moved with his family to Australia to escape the Nazi reign. A University of Melbourne professor, he was later knighted for his work. He has also passionately worked to ensure the public health of marginalized communities.

English biologist and anthropologist Walter Baldwin Spencer is remembered for his pioneering study of the indigenous population of Australia. He initially taught biology but later drifted to anthropology. He was also knighted but died while on an expedition to study the Ushuaia of the Tierra del Fuego.

Henry Harris was an Australian professor and scientist who taught at the University of Oxford. He is best remembered for his pioneering work on human genetics and cancer during the 2000s. Henry Harris was knighted in 1993 for his contribution to science.

Isobel Bennett was an Australian marine biologist best remembered for assisting William John Dakin with his famous book Australian Seashores. One of the most celebrated Australian marine biologists of all time, Bennett played an important role in popularizing the book after Dakin's demise in 1950. She also wrote several other influential books, such as Australia's Great Barrier Reef.