50 Years Ago
- Agriculture
50 years ago, screwworm flies inspired a new approach to insect control
The United States has wiped out screwworm flies repeatedly since 1966 using the sterile male eradication technique.
- Animals
50 years ago, atomic testing created otter refugees
Nuclear testing on the island of Amchitka caused hundreds of otters to be rehomed 50 years ago. Those hundreds have grown into thousands.
- Health & Medicine
50 years ago, the safety of artificial sweeteners was fiercely debated
Scientists are still learning more about the health effects of chemical sweeteners
- Plants
50 years ago, a 550-year-old seed sprouted
Old seeds can sprout new plants even after centuries of dormancy.
- Health & Medicine
50 years ago, a flu pandemic spurred vaccine research
A half-century after the Hong Kong flu pandemic, scientists are getting closer to a universal vaccine.
- Health & Medicine
50 years ago, a pessimistic view for heart transplants
Surgeon Christiaan Barnard performed the first successful human-to-human heart transplant in 1967. In 1968, he predicted that patients would survive five years at best. Fortunately, he was wrong.
- Earth
In 1968, scientists tried taming hurricanes
For over 20 years, the U.S. government tried to subdue hurricanes through cloud seeding, with mixed results.
- Genetics
50 years ago, scientists took baby steps toward selecting sex
In 1968, scientists figured out how to determine the sex of rabbit embryos.
- Particle Physics
50 years ago, neutrinos ghosted scientists
In the last half-century, neutrino detectors have spotted particles cast out by the sun, supernova 1987A and a supermassive black hole.
- Tech
50 years ago, a Japanese scientist dreamed up a rocket-propelled train
50 years ago, a Japanese engineer tried rocket boosters on a train. Today, high-speed trains propelled by superconducting magnets are being tested.
- Astronomy
In 1968, scientists thought they were close to detecting gravity waves
Despite an unverified discovery in 1968, spacetime ripples remained elusive for nearly 50 years.
- Tech
50 years ago, NASA astronauts prepared to return to space
Apollo 7 crewmembers underwent their first major tests 50 years ago. Today, U.S. astronauts struggle to get into space.
