A mathematician (MSc), science historian (PhD) and science communicator, Danielle Ouellet taught the history of science at Université Laval and press relations and science communication at the Université du Québec à Montréal, where she created the Groupe de recherche sur la communication scientifique.

She has published or co-authored many popular science books, including Adrien Pouliot, un homme en avance sur son temps (Boréal, 1986), Fernand Seguin, le savant imaginaire (Libre Expression, 1994), Histoires de chimistes (Presses de l’Université Laval, 1996), La passion du Saint-Laurent (Les Éditions MultiMondes, 1997), Franco Rasetti. Il a dit non à la bombe (Guérin Éditeur, 2000), Une musicienne et son chirurgien. Mutations génétiques et cancer, l’histoire d’une vie (les éditions du passage, 2012; re-released by Maestria, 2018), 40 ans Les Amis du Jardin botanique de Montréal. La fine fleur du savoir (Les Amis du Jardin botanique de Montréal, 2015) and Chez nous, on t’aime déjà ! L’histoire de la Maison et de la fondation Jean Lapointe (Centre québécois de lutte aux dépendances, 2017). Her many articles on science, medicine, economics, and culture have appeared in Forces, Premium, and Québec Science, among other publications. She served as Editor in Chief of Découvrir, la revue de la recherche (Acfas) and Commerce Collection Prestige.

Danielle Ouellet was honoured by Université Laval and the City of Québec for her contribution to advancing the accessibility of science in the province of Quebec.