Despite the prominent health threat posed by fine particulate pollution, fundamental aspects of its formation and evolution continue to elude scientists.

Neutron spectroscopy is an important tool for studying magnetic and thermoelectric properties in materials. But often the resolution, or the ability of the instrument to see fine details, is too coarse to clearly observe features identifying novel phenomena in new advanced materials.

Rough seas prompted SpaceX on Saturday to delay the emergency escape test of its new crew capsule by a day.

Australia's unprecedented wildfires season has so far charred 40,000 square miles (104,000 square kilometers) of brushland, rainforests, and national parks—killing by one estimate more than a billion wild animals. Scientists fear some of the island continent's unique and colorful species may not recover. For others, they are trying to throw lifelines.

A highly contagious bird flu has been confirmed at a Czech farm, officials said Saturday after a French farm union warned of the risk of a new outbreak in Europe.

Rain and thunderstorms doused long-burning bushfires across much of eastern Australia Saturday, but they also brought a new threat of flooding in some areas.