Scientists discover hidden gut-brain circuit that triggers protein cravings

Wild disturbances are on the rise, while land disturbed by human activity has been decreasing.

Our sun is a loner. It lacks a stellar companion hurtling through interstellar space with it. But we've known for a long time that that's actually relatively rare—most stars have at least one gravitationally bound partner. Understanding how exactly those stars are related to each other is critical for observational campaigns—especially for those of exoplanets. So a new paper posted to the arXiv preprint server from researchers at the University of Madrid that categorizes almost every star within

Internal changes due to the sun's "active biorhythm" have become increasingly "skin-deep" over the past four solar activity cycles, according to a new study.

A decade ago, Bradley Markle, an assistant professor at the Institute of Arctic and Alpine Research at the University of Colorado Boulder, noticed an odd pattern while sifting through temperature records from the end of the last ice age in Antarctica. The records seemed to defy prevailing theories of how temperatures vary across the Antarctic continent.