The enchanting dunescape stretches over 43 miles (70 km) along the coast and over 30 miles (50 km) inland. Lençois translates as "bedsheets" in Portuguese and refers to the rolling white dunes that dominate the landscape. The national park is best visited in June, July and August, when the lagoons are at their best, according to Lonely Planet.

Research on hidden structures deep within Earth’s mantle challenges theories about our planet’s middle layer and could transform our understanding of plate tectonics.

The gigantic coronal hole is blasting high-speed solar wind toward Earth, potentially igniting vibrant auroras and minor geomagnetic activity on Jan. 31.

Artificial-intelligence tools are starting to allow nonexperts to search for patterns across the globe

YR4 might force NASA to plan the first-ever space mission to push an asteroid away from Earth. Most likely, though, it's a non-threat.

Astronomers have retracted the discovery of a new asteroid after realizing the object was the remains of Elon Musk's Tesla Roadster and its driver "Starman," which were launched into space in 2018.

A new study finds that the rate of ocean warming has more than quadrupled over the past 40 years — and pinpoints why.

The exoplanet HD 20794d swoops in and out of its habitable zone every few hundred days, making for an extreme climate.

Though the planets are always “aligned,” seeing more than four in the sky is more uncommon. February’s lineup is a chance to glimpse all seven in one sweeping view.

Exposure to traffic-related air pollution could harm the liver and potentially increase the likelihood of developing fatty liver disease.

Gov. Gavin Newsom and Democratic lawmakers are sure to lecture us again this session about the need to step up our efforts to combat climate change.