Studies show the menstrual cycle changes certain brain regions. But they don’t reveal whether that’s connected to emotional fluctuations. Colored coronal magnetic resonance imaging (MRI) scan of the ...

Rivers, streams, lakes, and reservoirs aren't just scenic parts of our landscape -- they're also vital engines for life on Earth. These inland waters 'breathe' oxygen, just like we do. But a new study ...

Water use in California was lower than officials estimated it would be between 2000 and 2020, according to a new report. The findings raise questions about the accuracy of long-term water-demand ...

Hydrology is the study of the cycling of water through different reservoirs on Earth. It also refers to the cycling of liquids such as hydrocarbons on other planets. Hydrology focuses on the ...

The president of Brazil has been pursuing his big plans for the Amazon rainforest, even as parts of it burn in massive wildfires. He has been working to carve more mines and pave new roads. He has ...