News
-
AstronomyAge of the universe: A new determination
Analyzing the faint glow left over from the Big Bang, scientists report measuring the age of the cosmos with unprecedented accuracy—14 billion years, accurate to within half a billion years.
By Ron Cowen -
Health & MedicineTeam locates anthrax-receptor protein
Scientists have identified the protein that enables the anthrax toxin to attach to cells and trigger disease, while another team has mapped the molecular structure of the toxin component that does most of the damage to cells.
By Nathan Seppa -
PaleontologyFossils Indicate. . .Wow, What a Croc!
Newly discovered fossils of an ancient cousin of modern crocodiles suggest that adults of the species may have been dinosaur-munching behemoths that grew to the length of a school bus and weighed as much as 8 metric tons.