Could these mysterious flashes of light in 1950s photos be UFOs? Some researchers think so
Ads from the 1950s relied on punctuation — ellipses, exclamations, dashes — to create rhythm and convey emotion. A study shows how these marks echoed radio voices, guiding reading and simulating speech in print.
Since the 1950s, birth rates have plummeted in the developing world. A recent study analyzes two competing, long-debated explanations and finds that neither is entirely accurate.
