A new wrinkle on an old technology – solid-state thermophotovoltaics (TPV) – could provide a high-efficiency alternative for directly converting high-temperature heat from concentrated solar thermal to utility-scale electricity.
Evolutionary timelines beware. Calculating ocean oxygen to calibrate the appearance of new life can be tricky. Oceans are deeper here, shallower there, turbulent and calm, hot and cold all at once. They distribute oxygen unevenly, then they rob O2 rich areas and push the oxygen to the ends of the globe, as this new computational model framed in the Proterozoic Eon shows.