Humans are not the only factors causing climate change, and it is important to note that in the national public debate since the conversation around climate change "has become so politicized," writes Tonya T. Neaves, managing director for George Mason University's Centers on Public Service.
"We've totally lost sight of the science — and with it, any room for bipartisanship," writes Neaves for NBC News' Think, which provides commentary pieces from a range of personalities.
Most scientists agree humans are the main cause of the current global warming trend, and 13 federal agencies in early November released a scientific report stating global warming is "unambiguous," and there is "no convincing alternative explanation" that "human-caused climate change isn't just a theory, it's reality."
But Neaves says "natural forces beyond human control are also gradually affecting our climate," and "complex gravitational interactions, including changes in the Earth's orbit, axial tilt and torque," are at play.
"Because these gravitational shifts, occurring over millennia, can influence climate patterns and ultimately lead to noticeable variations in seasons," she adds. "Interestingly, research suggests climate change can alter the tilt of the Earth, but an unrelated change in tilt can also further change the climate. It is a balance-counterbalance relationship."