How did the universe come into being? There are a multitude of theories on this subject. In a Physical Review Letters paper, ...

Dark matter has two central properties: it has mass like regular matter, and unlike regular matter, it reacts weakly or not at all with light. Neutrinos satisfy these two criteria, but neutrinos move ...

Scientists say human-caused climate change led to 15,000 additional early deaths from wildfire air pollution in the continental United States during the 15-year period ending in 2020. Scientists say ...