Thumb-sized device quickly 'sniffs out' bad breath

No one wants bad breath—not when visiting friends and family, at a job interview, and especially not on a first date. Smelly breath can make things awkward, but it also is a natural warning sign, indicating that serious ...

Cold molecular clouds as cosmic ray detectors

The ionization of the neutral gas in an interstellar molecular cloud plays a key role in the cloud's evolution, helping to regulate the heating and cooling processes, the chemistry and molecule formation, and coupling the ...

Image: Lomonosov crater on Mars

At first glance this captivating scene peering through wispy clouds and down onto a dune field is reminiscent of a satellite view of one of Earth's deserts, but this is in fact a beautiful landscape on Mars.

Yarns coated with enzymes can act as filters

North Carolina State University researchers showed in a new study they could coat cotton yarns with enzymes, which are nature's tool for speeding chemical reactions, in order to change hydrogen peroxide into oxygen and water. ...

Small volcanic lakes tapping giant underground reservoirs

In its large caldera, Newberry volcano (Oregon, U.S.) has two small volcanic lakes, one fed by volcanic geothermal fluids (Paulina Lake) and one by gases (East Lake). These popular fishing grounds are small windows into a ...

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