Weirdly, spaceships have no direct way to gauge their own speed. Luckily, we can use some physics tricks to figure it out.

This study provides an important and biologically plausible account of how human perceptual judgments of heading direction are influenced by a specific pattern of motion in optic flow fields known as ...

REM (rapid eye movement) and non-REM (NREM) sleep stages contribute to systems memory consolidation in hippocampal-cortical circuits. However, the physiological mechanisms underlying REM memory ...

When a caregiver fails to meet the needs of an elderly person who cannot care for themselves, neglect can result. Sometimes the caregiver may withhold nourishment, medications, or even hygiene, ...

There is no recent news for this security. Got a confidential news tip? We want to hear from you. Sign up for free newsletters and get more CNBC delivered to your inbox Get this delivered to your ...

Robert Kelly is managing director of XTS Energy LLC, and has more than three decades of experience as a business executive. He is a professor of economics and has raised more than $4.5 billion in ...

The PLAIN DEALER was founded as a weekly newspaper on 7 Jan. 1842 by JOSEPH WM. GRAY (1813-62) and became an evening daily on 7 Apr. 1845. Its name was probably inspired by a former Jacksonian paper ...