Researchers don't entirely understand why we humans sometimes walk around (or doing any number of other things) in our sleep, but there are a few myths that they can dispell. Learn more about sleepwalking, aka somnambulism, in this classic episode of BrainStuff. Learn more about your ad-choices at https://news.iheart.com/podcast-advertisers

Evergreens' needles are their leaves, so why don't they change color and drop in the fall? Learn how evergreen leaves work in this episode of BrainStuff. Learn more about your ad-choices at https://news.iheart.com/podcast-advertisers

You may have heard that people share about 50 percent of their DNA with bananas, and while there's a seed of truth to that, it's not quite right. Learn about our genetic similarity to fruit and other life forms in this episode of BrainStuff. Learn more about your ad-choices at https://news.iheart.com/podcast-advertisers

Dogs communicate by yawning, and it's complex to figure out what they might mean. Learn more about your ad-choices at https://news.iheart.com/podcast-advertisers

There are lots of misconceptions out there about what causes the stunning Aurora Borealis. Learn what's really up with the Northern Lights in this classic episode of BrainStuff. Learn more about your ad-choices at https://news.iheart.com/podcast-advertisers

Deep frying anything is a science -- but perhaps especially a whole turkey. Learn how to do it (and why it works) in this episode of BrainStuff. Learn more about your ad-choices at https://news.iheart.com/podcast-advertisers

The vast (vast!) majority of humans need a passport in order to travel internationally. Learn why -- and who doesn't -- in this classic episode of BrainStuff. Learn more about your ad-choices at https://news.iheart.com/podcast-advertisers

Spoiler alert: Yes, breeds of dogs said to be hypoallergenic can still set off your allergies -- but they may be better for you than other breeds. Learn why in this episode of BrainStuff. Learn more about your ad-choices at https://news.iheart.com/podcast-advertisers

You may have heard about the supposed inverse relationship between confidence and knowledge -- but is it true? Learn more about the Dunning-Kruger effect in this classic episode of BrainStuff. Learn more about your ad-choices at https://news.iheart.com/podcast-advertisers

Heating homes and other human hangouts requires a huge carbon footprint -- but meanwhile, we're wasting heat every day (and sweating) in systems like subways. Learn how one project hopes to use that excess heat for the greater good in this episode of BrainStuff. Learn more about your ad-choices at https://news.iheart.com/podcast-advertisers

Bacon and eggs are a traditional breakfast -- but that tradition only goes back about a century. Learn how Sigmund Freud's nephew invented public relations and changed the way we eat breakfast in this classic episode of BrainStuff. Learn more about your ad-choices at https://news.iheart.com/podcast-advertisers

Cockroaches are, if nothing else, admirably persistent -- they can spring back from a 90% population loss just a couple generations. Learn how hardy they are in this episode of BrainStuff. Learn more about your ad-choices at https://news.iheart.com/podcast-advertisers

Wolverines may not have adamantium-reinforced skeletons, but this species of weasel boasts a few superpowers of its own. Learn more about wolverines in this episode of BrainStuff. Learn more about your ad-choices at https://news.iheart.com/podcast-advertisers

Something has to be done with all those fall leaves, but the best option for the environment (and your lawn) isn't raking, it's mulching. Learn why, and how to get started, in this episode of BrainStuff. Learn more about your ad-choices at https://news.iheart.com/podcast-advertisers

We often use the terms 'wasp' and 'hornet' interchangeably, but that's not quite right, and knowing the difference can save you a sting. Learn about these insects in today's episode of BrainStuff. Learn more about your ad-choices at https://news.iheart.com/podcast-advertisers

In cases of spontaneous sex reversal, an animal born male can become female, or vice versa, due to genetic or hormonal changes. Learn the story of how one hen became a rooster in this episode of BrainStuff.  Learn more about your ad-choices at https://news.iheart.com/podcast-advertisers

Farmers in the Himalayas depend on yearly snow melts to water their crops, but climate change means they're not getting enough snowfall to replenish natural glaciers. Learn how artificial glaciers are helping in this episode of BrainStuff. Learn more about your ad-choices at https://news.iheart.com/podcast-advertisers

The way that applause starts and moves through a large crowd is scientifically predictable. Learn what the research shows about the influence of sound and psychology in this episode of BrainStuff. Learn more about your ad-choices at https://news.iheart.com/podcast-advertisers

Millions of lives are saved by blood transfusions every year, but sometimes donations are in short supply. Learn how researchers are hoping to make more blood universally transferable in this episode of BrainStuff.  Learn more about your ad-choices at https://news.iheart.com/podcast-advertisers