“We are no longer constrained by what Mother Nature gives us,” says Claes Gustafsson, cofounder of the DNA synthesis company DNA2.0, in Menlo Park, California. Now, the constraint is the toolkit.

Brown-Throated Three-Toed Sloths move slowly at 0.24 km/h but swim well; their grip muscles excel over pushing, making ground travel difficult. Galápagos tortoises are large, slow movers ...

The nuclei of progenitor cells in the developing neuroepithelium move between the apical and basal surfaces of the cells as they progress through the cell cycle. The functional relevance of this ...

With their large size, slow-moving nature, and fondness of seagrass, it's easy to see why they're nicknamed “sea cows.” They’ve long been fascinating to humans, inspiring tales of mermaids among ...