You can now acces on-line our review on emerging applications of singlet-singlet and triplet-triplet electronic energy transfer processes. Examples include photosynthetic light-harvesting, light-activated sensors, processes of cooperative and accretive energy pooling and quantum cutting in rare earth-doped crystals, and incoherent triplet-triplet energy upconversion in molecular solutions. The article is highlighted in the cover of the Light and Life: Biophotonics Special issue of Laser & Photonics Reviews.