Current science is shows a trend and current hypotheses say this and that are to blame. (climatesight.org)
A Set - by - set Examination of Current Hypotheses on Corrosion in Concentrating Solar Power Systems Operating Above 700 °C (solarpaces.org)
Current hypotheses about the formation of planetary systems indicate that hydrogen - rich gas giant planets, like Jupiter and Saturn, likely formed early in the life of solar systems and probably closer to their host star. (spaceflightinsider.com)