december , by irene pepperberg, ph.d. dr. pepperberg's african greys athena and griffin parrots live in flocks—sometimes of several hundred birds, sometimes far fewer. as a prey animal, living in a flock provides protection. partly, it is simply a matter of numbers—that is, the chance that any one bird...
the most super plugged-in among us are learning how hard it is to truly break free of the five biggest tech companies. but even taking breaks from to recharge and unwind has benefits. by john donovan feb , electronics / everyday tech things that didn't exist years ago that we now can't live without...
propyzamide is practically non-toxic via ingestion. the reported oral ld values for propyzamide range from mg/kg in female rats to mg/kg in male rats, respectively, and mg/kg in dogs. propyzamide is slightly toxic by skin exposure, with a dermal ld of greater than mg/kg. when applied to the skin of rabbits...