Scientists from the California Institute of Technology (CIT) have developed a new solar cell technology that they say absorbs up to 96 percent of “incident” light. Experimental tests revealed that the new cells operate at around a 90 percent quantum efficiency rate. Because they are made of plastic, they could significantly reduce the overall cost of photovoltaic cells as well.
A new look at the relationship between humans and honey bees.In this course we take a hard look at how people manage honey bees and consider more natural ways to take care of them. The … Continue reading »