Anyone who has ever watched a child recover from strep throat or a parent rebound from pneumonia knows the healing power of antibiotics. Yet over the last few decades, we have been squandering the power of these medicines.

Roughly 70 percent of all antibiotics used in the United States are given to healthy farm animals to foster rapid growth and make up for unhygienic living conditions. Many bacteria that live on animals adapt and transfer to humans, spreading superbugs that are often resistant to treatment.

For more than 35 years, the FDA has recognized that giving antibiotics to farm animals poses a risk to human health, yet the agency has done almost nothing to stop it. Indeed, it has mastered the art of making inaction look like action. Last May, NRDC and our partners sued the FDA to prompt it to take action. Instead, the agency retrenched.

It started by claiming the livestock industry could police itself. In our lawsuit, we asked the FDA to finally rule on two citizen petitions -- one filed 12 years ago, the other six years ago -- urging the agency to stop the use of antibiotics in healthy animals. In November, the FDA announced that although it shares concerns that the use of antibiotics to make animals grow faster is dangerous for humans, it would deny the petition because it was pursuing an alternative strategy.

This "alternative strategy" turns out to be just another name for the status quo. Instead of banning the use of antibiotics in healthy animals, the FDA is allowing the livestock industry to follow a voluntary approach. But we already know voluntary doesn't work. The FDA has been operating under that model since 1977, yet the practice has expanded exponentially over the years. Talk about the fox guarding the hen house.

In December, the FDA tried to further justify its inaction by erasing the historic record. Back in 1977, the agency proposed to withdraw approval for the use of several antibiotics in animal feed based on findings published in two notices posted in the Federal Register. The notices containing the findings have been listed in the Federal Register for more than three decades. But just before Christmas a few weeks ago, the FDA pulled the notices. Soon after it buried its 35-year-old proposal, the agency tried to have it both ways. On January 5, it proposed banning off-label uses of a class of antibiotics known as cephalosporins on healthy livestock. That sounds like a step in the right direction, and the agency got some favorable press, but keep in mind that cephalosporins account for less than 0.25 percent of all antibiotics used in agriculture.

This tiny gesture reveals a fundamental problem within the FDA's position: The agency has never disputed the science proving that antibiotic use in healthy animals is a health risk, and yet it still refuses to take bold action -- action we believe it is legally obligated to take.