Most people first notice pill bugs while lifting a flowerpot or turning over a log, then watching small gray roly polies curl ...

Insects have been assumed to breathe through a system of tracheal tubes (considered passive air channels), with gaseous exchange being driven by body movements or hemolymph circulation. However, the ...

Rather than rely solely on passive diffusion, insects use discontinuous patterns of gas exchange to avoid the toxic effects of oxygen, according to researchers at the University of California, Irvine.