evidence: The climate is changing — the thing is, it isn’t just due to humans. Natural forces beyond human control are also gradually affecting our climate. These geophysical forces are vital to understanding global warming. Man is indeed responsible for a large portion — possibly even a majority — of global warming. But also in play are complex gravitational interactions, including changes in the Earth’s orbit, axial tilt and torque. [...] Still, even President Donald J. Trump has implied the whole of idea climate change may just be a hoax. Most Republicans seem to agree that it is not a serious problem.