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Case file

Benjamin Kahn

Wikipedia's first sentence called it “israeli marine biologist”. Today it says “marine biologist and environmental activist”.
Measured, not asserted. Every count, date and revision on this page was taken from Wikipedia's own history and checked against the live article. The words quoted are theirs.
Machine-checked against the full current article on 2026-08-03.
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The opening as it read in 2020

Benjamin Kahn (born 1955) is an Israeli marine biologist and environmental activist. His work includes ecological improvements of the Red Sea reef , where damage began in 1997 with the advent of fish farming , resulting from tons of waste into the reef. Kahn appeared on Time Magazine 's list of " Heroes of the Environment " October 2007. Kahn's work has been done largely through Zalul Environmental Association , an environmental non-profit organization founded by his billionaire philanthropist father and dedicated to protecting the seas and rivers in Israel . Kahn serves as chairman of Zalul. Kahn is the founder and CEO of Atlantium Technologies, a water purification technology firm established in 2005 that developed a hydro-optic ultraviolet technology used as a non-chemical means to control biofouling . In 2017, Atlantium was chosen to install this system to prevent the clogging of piping at the Hoover Dam by quagga mussels . Kahn also serves as President of Coral World International Ltd., an operator of marine parks that specializes in ecologically-friendly tropical life systems in symbiotic environments.

This is Wikipedia's own text, saved in our repository. Their copy of it is revision 963958428.
Today
Wikipedia's first sentence called it “israeli marine biologist”. Today it says “marine biologist and environmental activist”. Read the current article and compare.
201020152020Oct '232025
Counts in the opening at each snapshot. Green: the word gained ground. Red: it was cut. Grey: no change.

What Wikipedia says this is

Every article opens by defining its subject. This one was redefined since 2010, and today's defining sentence is their current revision.

Then

israeli marine biologist

Now

marine biologist and environmental activist

Struck red text is no longer in the article; dotted amber text was rewritten. Every revision id links to Wikipedia's copy; the text shown is our own saved copy. Data: /data. Wikipedia text is CC BY-SA; quoted for the record; not affiliated with Wikipedia.

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