NASA’s Phoenix spacecraft has spotted snow falling from Martian clouds, and detected evidence of past water at its landing site in the Martian arctic plains. Read more…

Howard Hsu traveled to Burma last spring to report on China’s growing trade with Burma, which is rapidly depleting forests and has created a thriving trade in exotic animals such as tigers, pangolins, and asiatic black bears. Watch video on Frontline/World, and read more about endangered animal poaching throughout Southeast Asia.

According to recent research done at the U. of Auckland, NZ, crows have passed a reasoning test that chimps failed. See article at New Scientist, or read more about the intelligence of genus Corvus (crows, ravens, jackdaws) at Nature online.

Three separate teams overcome a biomedical hurdle — creating stem cells without the use of human embryos. Download a video (88.18 MB) about this scientific feat from NOVA ScienceNow.

A new study provides fascinating insight into how we recall experiences. Led by Dr. Itzhak Fried of UCLA, it reports that the neurons we use when we experience an event are reactivated when we recall that event later on. Science writer Benedict Carey and Daniel Schacter of Harvard University discuss.