Flatworms, frogs, hamsters and the Ceropithecus monkey have been shown to do so too.
Has al-Awlaki ever been shown to do anything but makes speeches?
Wars supposedly fought to keep Britain safe have been shown to do the exact opposite.
Intestinal worms have been shown to do so on many occasions.
Goaltender performance, the argument runs, is much more tightly tied to team defense than to anything that the goalie alone can actually be shown to do.
Yet scientists have found evidence that the sea rocket is able to do something that no other plant has ever been shown to do.
The policy was shown to do more to improve literacy levels than the nationwide introduction of a compulsory "literacy hour" in 1998.
But she argued that an occasional swat, when delivered in the context of good child-rearing, had not been shown to do any harm.
A 49ers fan put together an alternative version, proving the point that Kaepernick also did all of the things that Wilson had been shown to do.
Besides – says the wise foodie – given what the food industry has been shown to do, if you didn't worry there would be something wrong with you.
Proton beams have been shown to do less long-term damage to surrounding healthy tissue in children's brains than conventional radiation.
