photos by jeff cremer and pete oxford of orange julia and sulfur yellow butterflies drinking the salty tears of a tracajá turtle in the peruvian amazon. sodium is a scarce resource in the western amazon, where there is little mineral content to rain water, so the butterflies have learned to get it where they can. luckily for the butterflies, the turtles don’t much mind, despite deriving no reciprocal benefit themselves.
Sir Nicholas Winton is a humanitarian who organized a rescue operation that saved the lives of 669 Jewish Czechoslovakia children from Nazi death camps, and brought them to the safety of Great Britain between the years 1938-1939.
After the war, his efforts remained unknown. But in 1988, Winton’s wife Grete found the scrapbook from 1939 with the complete list of children’s names and photos. Sir Nicholas Winton is sitting in an audience of Jewish Czechoslovakian people who he saved 50 years before.
as summer turns to autumn, decreasing levels of light begin to slow the production of chlorophyll in leaves, causing their green colour to fade. the production of carotenoids and flavonoids also begins to slow, but these pigments are broken down more slowly than chlorophyll, allowing their yellow and orange colours to be expressed. for some leaves, this time of year also sees an increase in the production of the flavonoid anthocyanin, causing those leaves with lower levels of other flavonoids or carotenoids to turn red. (see also: autumnal art)