50 Years Ago
- Environment
50 years ago, chemical pollutants were linked to odd animal behavior
Fifty years after studies hinted that pollution interferes with how aquatic creatures communicate, scientists are still unraveling its myriad effects.
- Planetary Science
50 years ago, astronomers were chipping away at Pluto’s mass
Prior to the discovery of Pluto’s moon Charon, astronomers struggled to pin down the dwarf planet’s mass.
- Physics
50 years ago, physicists thought they found the W boson. They hadn’t
Fifty years after a false-alarm discovery, physicists have caught the W boson and are using it to unravel mysteries of particle physics.
- Chemistry
50 years ago, scientists developed self-destructing plastic
In the 1970s, scientists developed plastic that could quickly break down when exposed to light. But that didn’t solve the world’s pollution problems.
- Health & Medicine
50 years ago, scientists found a virus lurking in human cancer cells
In 1971, scientists were building a case for viruses as a cause of cancer. Fifty years later, cancer-preventing vaccines are now a reality.
- Science & Society
50 years ago, UFO sightings in the United States went bust
In 1971, reports of unidentified flying objects were on the decline. Fifty years later, sightings have spiked thanks in part to pandemic lockdowns.
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50 years ago, NASA relaxed quarantine rules for returning moon missions
Fifty years after NASA declared that moon missions returning to Earth weren’t a contamination risk, protocols for planetary missions are under review.
- Science & Society
50 years ago, scientists predicted steady U.S. population growth
The country’s annual population growth rate, mostly stable since the 1970s, is now the lowest it’s been in over a century.
- Health & Medicine
50 years ago, scientists claimed marijuana threatened teens’ mental health
In the 1970s, scientists linked pot use to mental health woes in teens. Such concerns have helped keep the drug illegal for teens for 50 years.
- Science & Society
50 years ago, the United States wanted to deflate the helium stockpile
An attempt to dismantle the Federal Helium Reserve in 1971 failed. Fifty years later, the U.S. government is still determined to run out of gas.
- Space
50 years ago, experiments hinted at the possibility of life on Mars
In 1971, lab experiments suggested organic molecules could be made on Mars. Fifty years later, robots are searching for such signs of life on the planet itself.
- Health & Medicine
50 years ago, researchers treated chronic pain with electricity
In 1971, doctors eased chronic pain by sending electrical impulses to the spinal cord. Fifty years later, improved techniques help paralyzed people walk.
