A localized dust storm on Mars may have played a key role in driving water into the planet’s upper atmosphere, offering fresh clues to how the Red Planet lost much of its water over billions…
Ebola vaccine inches toward human clinical trials
[caption id="attachment_14507" align="alignnone" width="630"] Ebola virus swarms the surface of a host cell in this electron micrograph. Like most viruses, Ebola requires the help of a host cell to survive and replicate. PHOTO: TAKESHI NODA,…
Scientists deliver high-resolution glimpse of enzyme structure
New finding suggests differences in how humans and bacteria control production of DNA’s building blocks. [caption id="attachment_14503" align="alignnone" width="733"] Using a state-of-the-art type of electron microscopy, an MIT-led team has discovered the structure of an…
Waterbeds simulate weightlessness to help skinsuits combat back…
[caption id="attachment_14499" align="alignright" width="352"] SkinSuit evolution[/caption] Astronauts tend to become taller in weightlessness – causing back pain and making it difficult to fit into spacesuits. Astronauts may be more likely to suffer from ‘slipped discs’…
Chelyabinsk asteroid
[caption id="attachment_14494" align="alignnone" width="700"] Credit: M. Ahmetvaleev[/caption] Vapour cloud trail left by the Chelyabinsk asteroid as seen by M. Ahmetvaleev on 15 February 2013. It shows the path where an approximately 20 m-diameter, 13 000-tonne…