The shorter fall and winter days of low-angle sunshine, clear blue skies, and pleasantly mild temperatures are perfect for exploring any of Anza-Borrego Desert's lowest, hottest, and driest regions.

I had already hiked 50 miles to reach this gritty wall of lichen-covered sandstone. Several small caves honeycombed the steep face, many of them just wide enough for me to shimmy into. The sandstone ...

(Phys.org) —Portions of rock powder collected by the hammering drill on NASA's Curiosity Mars rover from a slab of Martian sandstone will be delivered to the rover's internal instruments. Rover team ...

Portions of rock powder collected by the hammering drill on NASA’s Curiosity Mars rover from a slab of Martian sandstone will be delivered to the rover’s internal instruments. Rover team members at ...