THEN AND NOW Upper photo taken in 1962 shows tundra-dominated mountain slope in Siberian Urals. A 2004 photo of the same site, below, shows conifers were setting up dense stand of forest. Stepan Shiyatov/Russian Acad. Sci., Global Change Biology 2008ECO-ADAPTATION The Siberian larch can assume different forms, depending on its climate. Where the weather is harsh, it will develop a low-growing shrub shape (left). When conditions improve, it can send up many upright trunks (center), but its growth is still diminished. Good conditions lead to a fast-growing upright tree with a single trunk (right). Nadezhda Devi, Russian Acad. Sci., Global Change Biology 2008