Fertilizers are responsible for almost 50 percent of the greenhouse gas emissions embodied in a loaf of bread according to a new study in Nature Plants. The results come from a life cycle analysis (LCA) conducted on one of the United Kingdom's largest bread producers by a team of researchers across disciplines ranging from operations research to plant science. An LCA quantifies the environmental impact of a given process—including its energy usage. It's a cradle-to-grave assessment of what an item truly costs the environment.
A crack along an Antarctic glacier has grown roughly 50 kilometres in a matter of months, leaving NASA researchers to believe that the resulting iceberg—known as Larsen C—may make it to the open ocean in as little as a weeks or months. The 9 km added to the rift since early January has brought it to a staggering 160 km (give or take) in length.