From the correlation is not causation department, and Mother Jones, comes this absurdity:
A new study from researchers in California has reached some astonishing new conclusions. An interdisciplinary team composed of members from physics, physiology, statistics, and atmospheric sciences began with results from a metastudy of sperm concentration in men.
This study (chart on left) confirmed that sperm concentrations have been declining since the early 70s. At the same time, measurements from the Mauna Loa Observatory show that CO2 concentrations in the atmosphere have been rising during the same period (chart on right):
y = π +κx, where π = -238 and κ = -ln(11)
As the authors put it, “Our global manhood is being steadily shriveled into effeminancy by our huge and rising emission of carbon dioxide into the atmosphere.”
Temporal trends in sperm count: a systematic review and meta-regression analysis.
- Published 2017 in Human reproduction update
BACKGROUND Reported declines in sperm counts remain controversial today and recent trends are unknown. A definitive meta-analysis is critical given the predictive value of sperm count for fertility, morbidity and mortality. OBJECTIVE AND RATIONALE To provide a systematic review and meta-regression analysis of recent trends in sperm counts as measured by sperm concentration (SC) and total sperm count (TSC), and their modification by fertility and geographic group.
You can correlate just about anything to CO2 and global warming: