Is there a hidden cause of obesity? A professor at Stanford thinks the answer might lie with the 100 trillion microbes living in our bodies.

Is the Key to Obesity All in Your Gut?

Producer: Scott Michels
Related
What Is a Healthy Diet? The Answers Are Unsatisfying

What Is a Healthy Diet? The Answers Are Unsatisfying

Thirty-five years after the first dietary guidelines, how much do we really know about the science behind a healthy diet?
 

More Like This

Nuclear Meltdowns Raised Fears, but Growing Energy Needs May Outweigh Them

Nuclear Meltdowns Raised Fears, but Growing Energy Needs May Outweigh Them

Catastrophic accidents at power plants have heightened fears about the safety of nuclear energy, but environmentalists and others are giving it renewed attention as a way to fight global warming.

 Can You Spot Misinformation?

Can You Spot Misinformation?

Think you can beat the experts in spotting misinformation? Watch this short video and find out.

 Where's That Photo From? Identify the Source

Where's That Photo From? Identify the Source

Online photos can be deceiving. Do you know how to identify the source? This skills-based video can help by teaching you how to use a reverse image search.

 How the Cold War Arms Race Fueled a Sprint to the Moon

How the Cold War Arms Race Fueled a Sprint to the Moon

After the Soviet Union sent the first human safely into orbit, the U.S. government doubled down on its effort to win the race to the moon.