Monthly Archives: October 2015

Four proposals to save the rhino

Image caption An endangered northern white rhino Rhinos are in trouble. The ancient Sumatran rhino has been declared extinct in Malaysia, following the fate of black rhinos in West Africa in 2011. Central Africa’s northern white rhino has been reduced…

VIDEO: Planetary pleasure

Skywatchers are enjoying a galactic treat this week with three planets coming together in a rare grouping. Jupiter, Venus and Mars are clearly visible in the eastern skies, and can be seen at their closest points to each other over…

‘Tractor beam’ grabs beads with sound

Media captionThis video shows how the holograms work, ending with a “cardboard UFO” wrapped around the speaker grid to demonstrate its “tractor beam” function (footage: Asier Marzo/Bruce Drinkwater/Sriram Subramanian) Engineers in Bristol have developed a system that can grab, hold…