Bird flu suspected in four Washington farm workers, CDC sends team
Cuddle time capped: Airport puts a 3-minute limit on goodbye hugs
With real scientific data, artist Martin Vargic has visualized hundreds of alien planets
Wild animals can experience trauma and adversity too − as ecologists, we came up with an index to track how it affects them
Tasmanian tiger de-extinction research advances
Blowing up: Inflatable space habitats could be key to exploring the solar system
Hubble Telescope sees 'stellar volcano' erupt in amazing colors (video, photo)
How to watch the Orionid meteor shower, debris from Halley’s comet
