Researchers can use a metric called the particle number concentration (PNC) to calculate the number of particles in a sample, such as the number of marbles in a jar.

The threat from a wildfire that engulfed a mountain in western Canada was downgraded Monday, with local officials saying there was "no longer a risk to life and safety" in the area.

Teachers and high school students live in vastly different media worlds, and that's one of several digital divides that ...

Biodiversity credits designed to incentivize the conservation and restoration of natural habitats need better transparency ...

By 2050, waters around the UK are expected to warm by about 1°C if we follow a "moderate" emissions path. If emissions continue to rise unchecked, the increase could reach 2°C–3°C by the end of the ...

Invertebrates, including insects, are poorly represented on the International Union for Conservation of Nature's (IUCN) Red ...

In a bright, open laboratory nestled along Washington State's Sequim Bay, among rows of glassware filled with seawater and ...

Scientists at the University of California San Diego have uncovered how diamond—the material used to encase fuel for fusion ...

Police officers in schools may be doing more harm than good when tackling harmful sexual behavior (HSB)—with girls affected by sexual harm particularly badly served—according to new research from the ...

The world will warm more than expected due to future changes in ozone, which protects the Earth from harmful sun rays but ...

An international research team has reported remarkable findings from an XRISM observation of the black hole X-ray binary 4U ...

New NASA research has found that Ceres may have had a lasting source of chemical energy: the right types of molecules needed ...