Planet hunters from the University of California, Santa Cruz, and the Carnegie Institution of Washington have discovered an Earth-sized planet orbiting a nearby star at a distance that places it in the “Goldilocks zone” (the orbital zone conducive to harboring life), where liquid water could exist and human habitation might be possible. The new planet […]
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Ozone hole could be lesser of two evils
A new study in the Journal of Physical Chemistrysuggests that the chemicals that helped solve a global environmental crisis in the 1990s – the hole in Earth’s protective ozone layer – may be making another problem – acid rain – worse. The chemicals in question, known as hydrochlorofluorocarbons (HCFCs), replaced the ozone-destroying chlorofluorocarbons (CFCs) once […]