The catalogue of all the new 128 events observed by LIGO, Virgo and KAGRA from May 2023 to January 2024 is being published. It reveals an even greater variety of binary pairs producing gravitational ...

Learn the distinctions between simple and stratified random sampling. Understand how researchers use these methods to accurately represent data populations.

Conservation has long depended on measurement. Populations are counted, habitats mapped, trends plotted against baselines ...