The infant formula safety review by a global food standards group comes as U.S. investigations struggle to determine how ...

Galaxy clusters are formed by a dense packing of many galaxies, making them the most massive structures in the universe.

Scientists have detected a surprisingly hot galaxy cluster dating back to the universe’s infancy. The cluster formed far earlier and burned far hotter than current models predict. Researchers believe ...

This example illustrates the use of regression analysis in a simple random cluster sampling design. The data are from S rndal, Swenson, and Wretman (1992, p. 652). A total of 284 Swedish ...