1.   Other scholars argue that reason cannot disprove their existence either.

2.   Rather than try to disprove the existence of something that obviously is there, scientists should find a way to manufacture more of it.

3.   Still, he distributes a widely discredited book purporting to disprove the existence of the gas chambers.

4.   Ted Danson plays a famous zoologist who seeks to disprove the existence of the Loch Ness monster.

5.   Their existence was long ago disproved, of course, but Mars has been shown to be an active place nonetheless.

6.   The defense had been attempting to disprove the existence of a genocide.