Research Preview: Science Magazine – October 6, 2023

Image

Science Magazine – October 6, 2023: The new issue features Ancient DNA; The risks of radioactive waste water release; Dating the arrival of humans in the Americas; and more…

The risks of radioactive waste water release

The wastewater releas e from the Fukushima Daiichi nuclear plant is expected to have negligible effects on people and the ocean

In 2011, the east coast of Japan suffered an earthquake and tsunami that resulted in the meltdown of three of the reactors at the Fukushima Daiichi nuclear plant. This led to an uncontrolled release of large amounts of radioactive material to the surrounding land and to the Pacific Ocean. 

Dating the arrival of humans in the Americas

A debate about the age of ancient footprints continues

Dating the oldest evidence for the presence of Homo sapiens in the Americas is a matter of ongoing debate. One view is that the earliest such evidence is from 16,000 to 14,000 years ago, after the Last Glacial Maximum (LGM), when people would have crossed the Beringian strait from Siberia over a dry land bridge.

Leave a Reply