A quarter of 258 observed rivers had unsafe levels of at least one drug. The findings raise concerns about Earth’s aquatic life and the global threat of antimicrobial resistance.
Supercell storm tops may act like mountains that obstruct winds, transforming their flow into violent turbulence that mixes near-surface air with the stratosphere above.
The Intergovernmental Panel on Climate Change showcased 50 scenarios to limit global warming to 1.5°C above preindustrial temperatures. A new study finds that only half of those scenarios are realistic.
Although unintentional, these errors may undercut local government efforts to tackle climate change.