Not all poisonous gases have a smell or a color. But a tiny grid of pastel- and candy-colored squares that effectively "sniffs" out hazardous chemicals in the air such as chlorosarin—a highly ...

And as the sea ice regime becomes increasingly unpredictable, understanding the fundamentals of gas exchange may help forecast climatic effects of this tenuous system.

If your unit manages its own gas cylinder exchange program, you may need some guidance from the Defense Logistics Agency.

Even in simple animals such as the sea anemones, however, some specialization has occurred. In epifaunal species the tentacular crown appears to be the major site of gas exchange while in one infaunal ...