This intriguing image shows what a blood clot looks like if you zoom right in. The best bit? The image is entitled The Clot Thickens. It is the winner of an annual competition held by British Heart Foundation. Read more >
Should scientists be allowed to create mutant viruses deadlier than natural ones? The White House waded into this controversy today with a surprising announcement to cut all funding to such studies, pending a thorough review of this risky research.