The poem, 鈥淢y country鈥, by Dorothea MacKellar, is recited by every preschooler in Australia. One line is of particular relevance:聽
鈥淎 land of droughts and flooding rains鈥.聽
When you buy a new pair of shoes or stereo you probably encounter, and subsequently toss out, lots of little packets bearing the warning 鈥楧o Not Eat鈥 filled with silica gel. Did you know though,...