The H5N1 influenza virus, also known as "bird flu," may well be more prevalent and less deadly than health officials had thought, according to a new study publi

Influenza activity in the U.S. remained relatively low from October through January — so low, in fact, that the current flu season is considered not to have o

Bird flu can be transmitted between mammals — and possible humans — needing only four mutations to do so, a new study published this week in the journal Nat

Some prize pigs at Ohio's county fairs may have a dark secret.

Flu activity around the country is high enough that health officials announced that the season is under way.

After a mild round last year, flu season is off to an early start this year with cases jumping in 5 Southern states, says the Centers for Disease Control and Pr

The new process may provide a revolutionary, all-purpose flu vaccine.

Chicago residents have a new way of treating the flu, but is it worth the risk?

Actor's comments during the Golden Globes did not sit well with the Centers for Disease Control and Prevention.

From January 1 to January 14, chicken noodle soup orders increased 35 percent over January 2012.

Experiments to determine how the H5N1 bird flu virus might gain the ability to spread easily among humans are no longer off limits.

The government released a framework to determine to fund research that could create a version of the bird flu virus that could infect by airborne droplets.

One reason flu transmission is thought to be lower during the summer months is because of the high humidity.

A fungal infection called Valley Fever is on the rise in the Southwest United States.

Twitter posts with anti-vaccine sentiments are "contagious," while posts with a positive take on vaccines are not.

Giving employees paid time off when they're sick is the best way to keep influenza from spreading throughout the office.

Track the flu in your area and get tips for staying healthy with this bevy of resources.

Officials are worried that a group of people in the Amazon who had been living in isolation from the outside world may have contracted the flu.

New study is first to show that a natural product can directly target a virus.

You know you're not the only one who has the flu, but here's how to get on the schedule when you really need to.

This flu season will likely peak in February and could be a mild one, according to a new predictive model.

From garlic to hand washing, here's what you need to do to stay healthy this year during cold and flu season.

Drug stores start offering flu shots in early summer, but the CDC recommends getting a shot by the end of October.

'The Secret Life of Pets' is a hilarious rendition of what happens when you leave your pet home alone.

When crisis hits, the jokesters come out of the woodwork. Here is what to expect.

The treated lumber found in 30 of the New Orleans homes built by Brad Pitt's green rebuilding nonprofit, Make It Right, is prematurely decaying.

Snowed in? Try these activities to keep you and your kids busy on your next snow day.

The severity of two big winter storms from 2010 are compared, stat by stat. Which one emerges as the true snow storm of the year?

If you're dreaming of a white Christmas, these photos of snow-covered nature from all around the world might do the trick.

New report says toxic chemicals are causing Americans 'grievous harm' that could be prevented by better government oversight.

The EPA decided this week to limit cancer-causing emissions from hydraulic fracturing, aka 'fracking,' but its new rules won't take effect until 2015.

Terrible environmental conditions and an unyielding government has put China in dire danger of poisoning its enormous population and the land around it.

The cat-carried parasite Toxoplasma gondi has been associated with a variety of illnesses, but you can take simple precautions.

The light from the moon influences more than you might suspect, including animal behavior and farming.

Martian water would be vital for human visitors, and it's also an important clue in our search for signs of alien life.

Acoustic engineer Trevor Cox is on a mission to identify the most wondrous sounds on Earth.

To help eliminate the perilous process of collecting potable water in Ethiopian villages, Italian architects design a water vapor-collecting tower.

We all know there's too much plastic making its way into the environment; here's an innovative solution to a seemingly intractable problem.

Will one conservation photographer's images be enough to save an important protected area from development?

For decades, Proenneke lived in a handmade cabin at Alaska's Twin Lakes; his writings and films have left a legacy.

The deforestation situation in Indonesia is not entirely bleak, thanks to the efforts of the Katingan Project.

At NuVu, students solve complex problems by focusing on imagination and constructive feedback.

Have you secured the health of nature so we continue to have quality of life?

For 25 years, EDF has partnered with leading companies to prove that good environmental strategy is good business strategy.

Collaboration is the key as Walmart works with some of the world's largest corporations to address global sustainability challenges.

The “Walmart Advanced Vehicle Experience” concept truck aims to demonstrate a wide range of cutting-edge technologies and designs.

Spanish visionary Pilar Mateo is snuffing out bug-borne diseases and the poverty behind them.

Conservation group Lion Guardians has helped East Africa’s Masai tribesmen bring back the big cats and better their own lives.

Watch this replay webcast of Walmart's Global Sustainability Milestone Meeting.

Talia Frenkel created a company that makes healthier condoms — but that's not all.