The dust trail from the largest comet outburst ever seen will grace the skies this summer — and it’s going to look like a giant hourglass. The night show will come courtesy of comet 17P/Holmes, whi… [+4953 chars]
In nature, there is a constant evolutionary battle between microbes and their hosts, during which many bacteria secrete specific proteins into the host's cells, aiming to alter its physiology while i… [+2582 chars]
