Technology

In each water sample, researchers examined nitrate isotopes, which are unique, allowing the team to trace the water sample back to where it originated. Credit: University of Texas at Arlington Four decades of changes in land use in central Costa Rica have increased nitrate concentrations in drinking water, in some areas to potentially unsafe levels, … Read more

Credit: Marc-Olivier Beausoleil Using data on four species of Darwin’s finches on the Galápagos Islands, researchers led by McGill University have confirmed a long-standing hypothesis that species diversity evolves through adaptation to different resources. Evolutionary biologists have long suspected that the diversification of a single species into multiple descendent species—that is, an “adaptive radiation”—is the … Read more

Illustration of luminescence-based multi-point temperature determination inside an opaque packed bed loaded with 6 color-marked spheres coated with luminescent materials. Left, right: examples of simulated luminescence images when only a single sphere is presented at two different locations. Credit: Guangtao Xuan, Otto-von-Guericke-Universität Magdeburg A team of researchers has proposed an indirect optical method for determining … Read more

Credit: Markus Spiske from Pexels Under the Biden administration, there has been an effort to do a better job of measuring public and private environmental impacts. The federal government is trying to develop ways of improving the measurement of environmental costs and benefits of public investments and is also trying to stimulate the development of … Read more