June 22, 1491 BCE — The Ten Commandments are handed down to Moses

No doubt you’re familiar with the story: during the 40 years that the Israelites spent wandering in the Sinai desert between fleeing Egypt and entering Canaan, they encamped for some time at the foot of Mt Sinai.

At one point, God summoned Moses, his chosen prophet and the leader of the Israelites, to the top of the mountain, and here he gave him stone tablets upon which were inscribed the Ten Commandments – one of the world’s earliest legal codes that is still known to us.

When Moses carried the tablets back down the mountain, he was sufficiently enraged by the conduct and reaction of his fellow Israelites that he broke them half. Fortunately, God had made a backup copy, and Moses was able to once more bring the tablets of the Ten Commandments.

Jewish tradition holds that both sets of tablets were stored inside the Ark of the Covenant, which implies that their current resting place is a non-descript government warehouse somewhere in the USA.

June 22, 1969 — The Cuyahoga River catches fire. Again.

Between 1868 and 1969, there were thirteen separate fires on the Cuyahoga River, the worst occurring in 1952. It was one of the most polluted watercourses in all of the United States. But the 1969 fire, although not the most damaging, was the one with the most lasting effects. Public outcry over the fire led to the creation of the Clean Water Act, Great Lakes Water Quality Agreement, and the creation of the federal Environmental Protection Agency and the Ohio Environmental Protection Agency (OEPA).

Water quality on the Cuyahoga has improved, and most of the largest individual sources of pollution have been cleaned up, but the problem remains one that needs guarding against to prevent a recurrence.