Air: It's one of the world's most important, least understood, and possibly life-saving substances
Following a moratorium on "dangerous" flu research, new studies reshuffle the molecular mechanisms that allow bird flu to infect humans.
Virologists are ending their worldwide bird-flu research hiatus, but they need approval from U.S. funding agencies.
After months of controversy, second bird flu recipe finally published
They still get sick and die; they just can't spread the disease
His skills as a string theorist helped him trace swine flu back to swine and revealed the source of a mysterious salmon plague
A new drug could foil any outbreak
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
After a week of swine flu hysteria, PopSci.com takes a look back at the history of pandemic flu
It was a busy weekend for public health officials
The Big Question: How many people will it infect this year?
Deja-vu all over again?
A different sort of computer virus gives drug developers new weaponry
WHO raises H1N1 pandemic alert level to 6
When vaccine shortages strike, a way to use small amounts more efficiently may be the answer
Also, human trials on H1N1 vaccine to start, worries about countries hoarding vaccine, and other influenza news