In the fickle, unpredictable system that is our climate, it looks like El Niño, which was already said to have came and gone with a whimper months ago by climate scientists, may finally be arriving.
When it happens, we may know by bunny breeding.
At times during the past 10,000 years, cottontails and hares surged when the El Niño weather pattern drenched the Pacific Coast with rain, according to an analysis of 3,463 bunny bones. The number of El Niños per century "correlates very strongly with the total rabbit population in Baja California, as well as relative abundance of the moisture-loving species of rabbits," says University of Utah anthropology doctoral student Isaac Hart.