Researchers used machine learning to identify and understand different fish calls.
The findings suggest current theories of how some volcanoes form may be too simple.
The decrease in lightning coincided with a drop in human activities that send aerosols into the atmosphere.
Study suggests the dangerous antibiotic-resistant bacteria known as MRSA first evolved naturally.
A new paper hypothesizes how the amount of dark matter could have grown exponentially in the early universe.
Coverage of the Coronavirus Pandemic