Influenza viruses kill up to 646,000 people worldwide every year.
Air: It's one of the world's most important, least understood, and possibly life-saving substances
We've rounded up 2014's most mind-blowing images for your viewing pleasure
A scientist stationed in Antarctica tells about the biggest scientific discovery of the year, and how to have fun at the Pole.
The controversial studies are meant to help predict what the virus will do next.
If 5,000 birds die in a forest and no one is around to find them, does it still become a media sensation?
The Big Question: How many people will it infect this year?
When vaccine shortages strike, a way to use small amounts more efficiently may be the answer
Mexico returns to normal while other countries grapple with the spread of the disease. Plus, a flu blog roundup
H1N1's family tree, the first analysis of the virus, and safety tips from a guy in a gorilla costume
But still informative
The Doc plays private dick for a day and stumbles upon the secret of that deadly virus
An illustrated explanation of why the world's most obnoxious virus at least doesn't stick around all year.
Also, human trials on H1N1 vaccine to start, worries about countries hoarding vaccine, and other influenza news
Winter is coming.
Ever wonder why December through March is the high season for cold and flu germs? Scientists at NIH may have the answer
Potent new â€œnanofabricsâ€ repel germs and pollution to keep you healthy
A cautionary tale about the limitations of big data
Just make sure your sweat levels are optimal.