Browsing: Lens_biology

Seven hundred years ago, Timbuktu was a dream destination for scholars, traders, and religious men. At the southern edge of the Sahara desert in what is now Mali, travelers from Europe, sub-Saharan Africa, Egypt, and Morocco met in the bygone metropolis to exchange gold, salt, and ideas. According to a description of Timbuktu in […]

“[mother’s day memories]”kyle post via Flickr under Creative Commons (CC BY 2.0) license In the beginning, my mother is carrying me in her arms as she closes a screen door. I remember her humming as she walks along, and then she sits down on a bench that is surrounded by greenery. That’s all that is […]

The next time you stop at the local drug store to pick up household standbys like shampoo, ibuprofen, and tissues, you might also consider picking up something rather more serious: an HIV test. Show your ID (the test is only approved for adults aged 17+), pay $40, and you can return home and learn your […]

This engraving of a gray squirrel was included in the December 1841 issue of Robert Merry’s Museum. One day in 1856, hundreds of people gathered to gawk at an “unusual visitor” up a tree near New York’s City Hall. The occupant of the tree, according to a contemporary newspaper account, was an escaped pet squirrel, […]