Ginkgo expert Peter Del Tredici in action at the Arnold Arboretum | Video
Senior research scientist Peter Del Tredici of Harvard’s Arnold Arboretum—see “The Living Dinosaur” by Jill Jonnes, from the November-December issue—has been studying the ancient tree species Ginkgo biloba since the 1980s. In this video, he explains some unusual features of the ginkgo and shows some living specimens of the tree, both full-size and bonsai, at the Arboretum.
Harvard-Smithsonian astrophysicist Fabio Pacucci explains one of cosmology’s newest mysteries.
Scientists are revisiting an old way of thinking about extinction.
A hotel, restaurants, and other retail establishments are open or on the way.
John Graham’s Denali Diary documents a dangerous and historic climb.
