| Further media investigations uncovered his prison record and fake university titles, though Mr Baptista da Silva's claims to have studied economics have not been categorically disproven. |
| A preventative approach is required to avoid possible harm to human health or to the environment, and so that preventative action can be taken even if scientific cause-and-effect has not yet been fully proven or disproven. |
| I have disproven your silly pig-dog notions about his victory being gratuitous. |
| The scenario that I propose in the novel is an hypothesis neither confirmed nor disproven by the most recent expertise. |
| Substantial epidemiological, virological and immunological evidence has disproven this hypothesis. |
| Given available baseline data, a direct link between renewed ivory trade and a detrimental impact on elephant populations can be neither proven nor disproven to a scientific certainty. |
