(2) Recent studies have shown that chaotic light seems to possess partial EPR type nonlocal correlation in momentum and in position. Chaotic light may simulate very interesting features of entangled states such as sub-wavelength interference and two-photon ghost imaging. The observation is fundamentally interesting. We have kept asking ourselves: where the EPR type momentum-momentum and position-position correlation come from? The underlying reason for which such sources exhibit simultaneous, even if partial, momentum-momentum and position-position correlation is a topic that challenges us given their complete chaotic and incoherence. On the other hand, from a practical point of view, we are investigating probably the most intriguing property of two-photon imaging with thermal light: in the field of two-photon geometric optics, thermal light sources behave as mirrors producing an equal size reproduction of a chosen object; we like to refer to such mirror as “magic” because in standard geometrical optics the image produced by a mirror is usually defined as virtual since the image is located behind the mirror in an imaginary space while in the case of two-photon geometric optics with thermal sources, the ghost image produced by the mirror is real in the sense that it lies in the real space and can be further processed by a camera or an equivalent optical system. The natural availability of thermal-like sources and their incoherence property suggest intriguing applications. Since the concept works for any wavelength (energy) of radiation and the formation of the image does not require any imaging lenses or equivalent imaging system, thermal light two-photon imaging seems quite promising for actual implementations in X-ray and ?-ray imaging. In particular, since the magic mirror produces an actual image, and not just the “projection” of the desired object, such method would allow the possibility of reconstructing the 3-D structure of an object by performing, layer-by-layer, 2D images at different distances.