This is the new dragon tree species Dracaena kaweesakii viewed from below showing the rich branching. The newly discovered dragon tree species Dracaena kaweesakii from Thailand is characterized by its extensive branching. The new species reaches an impressive 12 m in both height and crown diameter, and has beautiful soft sword-shaped leaves with white edges and cream flowers with bright orange filaments, all highly distinctive features. The study describing this exciting new species was published in the open access journal Phytokeys by an international team of scientists.

A team of researchers from Montreal has found that stroke patients living with Locked-In Syndrome (LIS) who cannot move, swallow or even breathe on their own, can regain a remarkable level of independence with technological help.

Poison dart frogs like this one, photographed by Louise Rollins-Smith during a trip to Panama in 2010, are threatened by fungal infections that paralyze their immune response. A fungus that is killing frogs and other amphibians around the world releases a toxic factor that disables the amphibian immune response, Vanderbilt University investigators report Oct. 18 in the journal Science.

A source of gut stem cells that can repair a type of inflammatory bowel disease when transplanted into mice has been identified by researchers at the Wellcome Trust-Medical Research Council Cambridge Stem Cell Institute at the University of Cambridge and at BRIC, the University of Copenhagen, Denmark.