More than half of Earth’s rivers freeze over every year.

On frigid days, water vapor in the air can transform directly into solid ice, depositing a thin layer on surfaces such as a windowpane or car windshield.

NASA’s Terra satellite passed over the Southern Pacific Ocean on Dec. 30 and found that Tropical Storm Sarai continued to move further away from Fiji and toward Tonga.

Pregnant women exposed to persistent organic pollutants, or POPs, had slightly smaller fetuses than women who haven’t been exposed to these chemicals, according to an analysis of ultrasound scans by researchers at the National Institutes of Health and other institutions.

Tropical Cyclone Calvinia formed on Dec. 29 and by the next day, its clouds from a band of thunderstorms on its western side had blanketed the island of Mauritius in the Southern Indian Ocean.

As the world warms, a new study is helping scientists understand how cone-bearing trees like pines and junipers may respond to drought.

A study in Botswana by Columbia University Mailman School of Public Health scientists finds that spikes in cases of life-threatening diarrhea in young children are associated with La Niña climate conditions.

Scientists have long recognized the potential to generate renewable energy from the world’s oceans by harnessing the power of tides and waves.

NASA-NOAA’s Suomi NPP satellite provided a visible image of Phanfone as it continued moving through the South China Sea.

An investigational cancer drug that targets tumors caused by mutations in the KRAS gene will be evaluated in phase 2 clinical trials, following promising safety and efficacy results in preliminary human studies and excellent results in animal studies.