ScienceLargest sunspot spotted in last 24 years wows astronomers: Solar storms may KO communications The largest sunspot recorded in 24 years is now happening on the surface of the Sun, and could potentially wipe out modern communications.by James Maynard
ScienceMegalodon sharks, terror of the oceans, became extinct 2.6 million years ago and whales grewby Jim Algar
ScienceRosetta's nose sniffs rotten eggs: Why does comet 67P/Churyumov-Gerasimenko smell so?by James Maynard
Healthy Living/WellnessToxin-secreting stem cells kill brain tumors in mice: Humans next?by Aaron Mamiit