US troops arrive in Poland as the interim government in Ukraine resumes an offensive against pro-Russia separatists in the east of the country. Ivor Bennett reports on the breakdown of an Easter truce agreement, and how the threat of more sanctions from the US could hit markets.
Journey through quail embryo wins Nikon science video prize
Sequential images of a ten day old quail embryo have won Portuguese biologist, Gabriel G. Martins first prize in this year's Nikon Small World in Motion Photomicrography Competition. The entry was one of hundreds submitted for the contest, which aims to highlight the latest techniques of scientific imaging.
Check out this incredible time-lapse video featuring shots of Earth taken from the International Space Station. Photography by Knate Myers and music from John Murphy. Images courtesy of NASA.
The Solar Dynamics Observatory, an incredibly advanced spacecraft designed to study the sun, collected images of the rarest predictable solar event, the transit of Venus across the face of the sun. Check it out!