He determined that the earth "wobbles" in its orbit. The earth's "tilt" is what causes seasons, and changes in the tilt of the earth change the strength of the seasons.
www.ngdc.noaa.gov/paleo/milankovitch.html
How does the earth's tilt affect the changing of the seasons, and what different angles cause those different seasons? ... So, seasonal changes depend on the tilt of the earth's axis because they lead to changes in the amount of heat delivered to a square meter of surface, and the fact that there are a changing number of...
imagine.gsfc.nasa.gov/docs/ask_astro/answers/980211f.ht... imagine.gsfc.nasa.gov/docs/ask_astro/answers/980211f.html
Now, they calculate that oceans warmed by the rise in greenhouse gases can also cause the Earth to tilt – a conclusion that runs counter to older models, which suggested that ocean expansion would not create a large shift in the distribution of the Earth's mass. ... And climate change can also affect the Earth's spin.
www.newscientist.com/article/dn17657-global-warming-cou... www.newscientist.com/article/dn17657-global-warming-could-change-earths-tilt.html
As far as I can tell, there has been no dramatic change in the earth's tilt, or rather obliquity, and certainly not by 26°, which would be very obvious, nor to 26° from the current ~23.5°.
www.physicsforums.com/showthread.php?t=180890
Axial tilt - Wikipedia, the free encyclopedia
In astronomy, axial tilt is the angle between an object's rotational axis and a line through the centre of the object perpendicular to its orbital plane, where the angle is measured from the perpend...
en.wikipedia.org/wiki/Axial_tilt
monitoring; tilt network; ground deformation; spectral analysis; decorrelation methodology ... This change is related to a local inflation episode lasting 3 months, during an unrest phase that started 2 years before. ... Search in Earth-prints...
www.earth-prints.org/handle/2122/4055 www.earth-prints.org/handle/2122/4055
Speculation from recent news stories imply project ... false the only thing that can change the tilt on earth is colliding with another planet which is what gave it its tilt in the first place 4.5billion years ago and the debris off that collision gave us our moon as we know it today .
answers.yahoo.com/question/index?qid=20080208092141AAAb... answers.yahoo.com/question/index?qid=20080208092141AAAbsHA&show=7
Now, they calculate that oceans warmed by the rise in greenhouse gases can also cause the Earth to tilt — a conclusion that runs counter to older models, ... ‘Global warming will affect Earth’s tilt’; Influx Of Water From Shrinking Ice Sheets Will Change The Axis Of Rotation From The Present 23.5°; Updated On:
www.4to40.com/geography/index.asp?id=132
But not to fear, the type of event that could change the axis that severely would be so catastrophic that the change in seasons would be the least of our concerns. If the earth had always had this different axis tilt, life on earth would be very different, depending on where you lived.
www.newton.dep.anl.gov/askasci/env99/env212.htm
Tilt of the Earth's Axis ... Note how the position of the North Pole on the Earth's surface does not change. However, its position relative to the Sun does change and this shift is responsible for the seasons.
www.physicalgeography.net/fundamentals/6h.html