New experimental techniques allows now to achieve new regimes in time, energy as well as novel symmetries. Temporally, we have developed a, XUV/attosecond heterodyne interferometer that allows temporal measurements with a precision of 3 zeptosecond and a controllable temporal control of 80zs. Such time scales are relevant for quantum electrodynamics, since the Compton time scale, dictating the uncertainty of a photon being created by an electron, is of ~8zs. The interferometer makes use high harmonic generation, in which emission of XUV photons are possible when electrons recollide with a parent nucleus. However, in nanoparticles, this recollision process is radically different than for atoms and molecules leading to a new energetically regime in recollision physics. Finally, by measuring photoelectrons in a  new 3D detector we can directly measure and recover chiral and dichroic selection rules in strong field ionization.