Conditions favourable to life may once have existed all over Mars. Detailed studies of minerals found inside craters show that liquid water was widespread, not only in the southern highlands, but also beneath the northern plains.
Heavens
An international team of scientists including University of British Columbia astronomer Ingrid Stairs has discovered a promising way to fine-tune pulsars into the best precision time-pieces in the Universe.
The discovery could give astronomers a new tool to study the powerful gravitational forces that shaped the universe.
ESA's Venus Express is helping planetary scientists investigate whether Venus once had oceans. If it did, it may even have begun its existence as a habitable planet similar to Earth.
These days, Earth and Venus seem completely different. Earth is a lush, clement world teeming with life, whilst Venus is hellish, its surface roasting at temperatures higher than those of a kitchen oven.
PROVIDENCE, R.I. [Brown University] — Planetary scientists have uncovered telltale signs of water on Mars — frozen and liquid — in the earliest period of the Red Planet's history. A new claim, made public this month, is that a deep ocean covered some of the northern latitudes.
Scientists can detect the movements of single molecules by using fluorescent tags or by pulling them in delicate force measurements, but only for a few minutes. A new technique by Rice University researchers will allow them to track single molecules without modifying them -- and it works over longer timescales.
Hurricane Celia dropped to a Category One hurricane during the late afternoon hours on June 22, and today, June 23 by 11 a.m. EDT, it had powered back up to a Category Two hurricane in the Eastern Pacific Ocean. Satellite imagery confirmed the strengthening visibly with the emergence of an eye in the hurricane.
LIVERMORE, Calif. - Hydrogen is the most abundant element in the universe and is a major component of giant planets such as Jupiter and Saturn.
But not much is known about what happens to this abundant element under high-pressure conditions when it transforms from one state to another.
A new research project at the University of Leicester will review the accuracy of medical diagnoses.
Evaluating diagnostic strategy is crucial to clinical practice as it helps maximise the efficacy of the treatments which are offered to patients. Many lives are affected every day by the diagnoses made by hospitals and medical doctors, and it is vital that diagnoses are accurate.
3G and Wi-Fi are the two main mobile communications technologies today, but until recently they have been complementary services, the former offering users network access through cell phone masts forming a wide-area network (WAN), the latter based on hot-spot connections through a local-area network (LAN). Both then provide connectivity to the web, email and other services.
A computer science researcher at the University of Leicester has investigated a technique which senses the activity of the user with the help of computer software systems.
The doctoral study by a Pakistani student aims to deliver the systems which change according to the situation of the user by using Software Sensors that scan the context of the user.
People who remain pale and never tan can blame their distant ancestors for choosing to live in the northern reaches of the globe and those who easily achieve a deep tan can thank their ancestors for living in the subtropical latitudes, according to Penn State anthropologists.