instead of writing reviews or proposals, answering mails, contribute to to other researcher's work, filling out forms etc. I think we actually got some nice results addressing continental lithosphere density and buoyancy -essentially what makes continents stick out to their elevation above sea level

I can only recommend to offer such internship, because in an effort to give the intern an impression of what a scientist ideally does in his working time, I managed to set some time aside to actually pursue, together with him, an independent own little research project which I thought of (continued)

That's interesting! It would be in the right location at the edge of the slab in the transition zone (see our Figure 1a) like Eifel and Massif Central, but I haven't looked into whether other observations there would also be in agreement with our proposed mechanism.

Topography data from www.gebco.net, plotted with GMT

This only considers sediments and there is probably a lot more storage capacity in basalts (e.g. Oelkers et al., 2023; doi:10.1016/j.ccst.2023.100098). Regardless, emission reduction need to be first priority, and CDR only for unavoidable emissions and removing what is already too much in the air.