As MESSENGER approached Mercury the spacecraft's Narrow-Angle Camera on the Mercury Dual Imaging System instrument captured a view of the planet's rugged, cratered landscape illuminated obliquely by the Sun.

There has been a threefold increase in new cases of self reported post-traumatic stress disorder symptoms among combat-exposed military personnel since 2001, according to a new study. Concerns have been raised about the health impact of military deployment. Studies have estimated as many as 30% of Vietnam War veterans developed post-traumatic stress disorder at some point following the war and, among 1991 Gulf War veterans, as many as 10% were reported to have post-traumatic stress disorder symptoms years after returning from deployment.

Filed under: Home Entertainment, Portable Video

When it comes to iPod docking alarm clocks, few can face-off with XtremeMac's Luna. Now there's the Luna X2. Normally we'd shred the puffery found in phrases like "world class iPod audio system," "crystal clear display," and a design meant to "complement any room's decor." However, their first-generation Luna was so well received that we tend to believe their boasting. For the moment, anyway. Your $120 (pre-order) gets you a pair of fully customizable, independent alarms, aux-in, AM/FM radio, and same audio performance found in the original Luna. Only now in a newly designed chassis which reflects the new iPod reality: the white iPod is dead.

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Until now, Mars has generally been regarded as a desert world, where a visiting astronaut would be surprised to see clouds scudding across the orange sky. However, new results show that the arid planet possesses high-level clouds that are sufficiently dense to cast a shadow on the surface.