The discovery of frog abnormalities by students on a school field trip in 1995 sparked hundreds of scientific studies in search of the cause of abnormality. This Socio-Scientific Issue has been used as an inquiry-based learning exercise for training in the practice of science, but it is also well-suited to teaching the nature of science. Our goal…

Since the 1990s, scientists and Indigenous peoples have worked together across Inuit Nunangat (Inuit homeland in Canada) to conduct research on contaminants in ringed seals ("Pusa hispida"; "natsiq," "natchiq" or [foreign characters ommitted] in Inuktut), a species of high cultural, economic and nutritional importance…

Polychlorinated biphenyls (PCBs) are a family of synthetic chemicals consisting of carbon, hydrogen, and chlorine atoms. PCBs have been produced commercially since 1929 in hundreds of industrial applications. Their continued production in the United States was phased out in the late 1970s, and strict disposal guidelines were regulated as adverse…

In 2018 the Gulf coast of Florida suffered extensive damage from harmful algal blooms (HABs), from as far north as Clearwater Beach south to Naples. The bloom lasted nearly a year, picking up in intensity during the late summer months. HABs occur when conditions such as reduced salinity, higher water temperatures, light saturation, and currents…

The objective of our program is to foster and facilitate authentic research experiences in middle and high school science courses. We do so by providing students with a complete experience in scientific experimentation and communication. The centerpiece is a set of experiment modules in which students investigate the effects of toxic chemicals on…

Problems associated with the environment loom large over the future well-being of young generations. A previous issue of PISA in Focus (PISA in Focus 87) shows that in 2015 many 15-year-old students believed that the future -- their future -- was going to be worse, environmentally, than the present. In particular, only a minority of students…

Understanding human environmental health is difficult for high school students, as is the process of scientific investigation. This module provides a framework to address both concerns through an inquiry-based approach using a hypothesis-driven set of experiments that draws upon a real-life concern, environmental exposures to lead (Pb2+). Students…