I think the photons are pressing us towerd the ground.
To me it sounds more "natural" that something (photons on there way toward the earthcenter) is pressing us toward the ground then something is holding us down to the ground with an unvisible line (gravity).
Maybe its wrong to call it magnetism, a more precisely word would be "photonstaticmagnetism", where the photons have 0 charge and the earthcenter have a +charge. You can compare it with a dust rag, the dust sucks to the rag when it gets static.
I think Isac Newton is way off when he is talking about gravity, because it simple talking against all physics law. Physic is nothing eals then mecanic. But he is right when he said that we are pressed toward the earth center with the speed of ligth in pressure zero (or vaccum???!!).
The nuclear power is the biggest reason why its getting hotter and hotter on the earth. Becouse it expand so much when we fission it, no athor energi expand that much, compare to other energi the diffrents could be 1.000.000. times more. Look at the fungus from a atomic bomb and you understand, so little make so much and its the same in a atomic powerstation. And as everybody know volume and heat is the same. When the total diameter of the earth including the stratosfer is getting bigger the photons get a longer distens to accerlate and the friction gain. It means hotter!
http://www.itdemokrati.nu/thebigbang/page1.html
Lennart Remstam