When Grandpa Was A Boy, Were There Any Dinosaurs?

Tag archive: 1993

Vaccines Save Lives

1993: Deaths from vaccine-preventable diseases in the United States: diphtheria, 156 in 1953 and none in 1993; whooping cough, 270 in 1953 and one in 1993; tetanus, 337 in 1953 and 11 in 1993; paralytic polio, 1,450 in 1953 and none in 1993.

Source: www.cdc.gov/vaccines/pubs/
pinkbook/downloads/appendices/e/
reported-cases.pdf

One Thing Leads To Another

Oriental white-backed vultures feeding on a dead cow in Rajasthan, in India, photographed by Bernard Dupont

1993: In 1993 there were around 40 million vultures in India. By 2007, the population of the long-billed vulture had plummeted by nearly 97 per cent, while the oriental white-backed vulture had fared even worse, with numbers down by more than 99 per cent.

Scientists eventually linked these disastrous declines to the veterinary use of the drug diclofenac. The drug was initially developed to treat pain and inflammatory disorders in humans; from the early 1990s, Indian farmers began to use it on their livestock.

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Perpetual Motion Cat

1993: Cats always fall on their feet.

Toast always lands buttered side down.

So if a slice of buttered toast were strapped to a cat’s back and the cat dropped from height, would the cat land on its feet or on its buttered back?

John Frazee, who submitted this conundrum to the magazine Omni, suggested that the unfortunate feline would hover, spinning, just above the ground. The buttered cat would, in fact, be a perpetual motion device.

Source: Omni, July 1993

Explanatory figures by Greg Williams