Recently, metal halide perovskite solar cells (PSCs) have attracted world-wide interest due to their high power conversion efficiency of 25.5% and great potential in becoming a disruptive technology in the photovoltaic industry. Scientists in China summarized current challenges and strategies for the fabrication of PSCs by printing techniques. Moreover, the stability of perovskite solar modules has been discussed and analyzed.

Twenty-nine percent of Americans are taking more supplements today than they were before the COVID-19 pandemic, bringing the percentage of supplement-takers to 76%, according to a new Harris Poll survey on behalf of Samueli Foundation. Nearly two-thirds of those who increased supplement use (65%) sought enhanced overall immunity (57%) or COVID-19 protection (36%). Other common reasons were to take their health into their own hands (42%) or to improve sleep (41%) or mental health (34%).

Study at the Federal University of São Paulo developed a recipe combining chickpea flour and psyllium, a plant-derived soluble fiber. The product is nourishing and rated highly by consumers in qualitative surveys.

Scientists made dairy cows try to walk in a straight line to help define normal gait.