Without Human-Caused Warming, Earth Would Be Entering an Ice Age Now, Study Finds

A new study suggests that human-driven climate change has postponed the next ice age, which would otherwise be starting now. According to the research, the natural cooling cycle driven by Earth's orbital variations—known as Milankovitch cycles—would be tipping the planet into a glacial period, but rising greenhouse gas concentrations have overwhelmed that trend. The study, published in a peer-reviewed journal, highlights how profoundly industrial emissions have altered the planet's long-term climate trajectory. Scientists note that the current interglacial period, the Holocene, has already lasted about 11,700 years, and past interglacials typically spanned 10,000 to 30,000 years. However, the combination of orbital forcing and high CO2 levels means the next glaciation may be delayed by tens of thousands of years—or skipped entirely. This finding underscores that human activity has become the dominant influence on Earth's climate system, overriding natural cycles that have operated for millions of years. 'An extremely natural and predictable phenomenon is now gone,' the study authors state. The implications are profound: the absence of an ice age will reshape sea levels, ecosystems, and human civilization for millennia to come. The study serves as a stark reminder that our current warming trajectory is not just a short-term anomaly but a fundamental disruption of Earth's rhythms.