Much of the discussion on climate change centers on whether Earth has experienced recent warming and, if so, by how much and what does it mean? However, Earth has a long climate history marked by 25 ice age cycles during the last 2.5 million years. Some glacial periods have seen ice and snow coverage exceeding 24% of Earth’s surface (compared with 10% now). In those glacial cycles, temperatures were 8 to 10°C cooler than the present outside of tropical regions. Yet, each time, Earth recovered from these deep glacials and avoided a spiral toward a permanent ice state. How?
In this white paper I discuss how Earth’s orbital dynamics work together with the planet’s features—including the configuration of the continents, ocean currents, and atmospheric circulation—to avert a permanent snowball state. These features reveal exquisite design that emanates from the mind of a wise, purposeful Creator who fashioned the planet with a glacial thermostat that allows humans to thrive.