Tag Archives: 800000

Ice cores reveal a slow decline in atmospheric oxygen over the last 800,000 years

Researchers have compiled 30 years of data to construct the first ice core-based record of atmospheric oxygen concentrations spanning the past 800,000 years. The record shows that atmospheric oxygen has declined 0.7 percent relative to current atmospheric-oxygen concentrations, a reasonable … Continue reading

Posted in Paleontology | Tagged , , , , , , , , , | Leave a comment