Right Now in BrainStuff

Have you ever thought about this - why don't people ride Despite the movie There has to be a reason why. And this video explains it:In part 1, at the 2:45 point, the video explains that there are seven traits that animals must have if they are going ...

You Asked:How does the Panama Canal's system of locks and dams work? --- Pam, Rex, Ga.Marshall Brain Answers:The This video has a nice description of the canal and its locks:You might think that the Pacific and Atlantic oceans would be at the same le ...

You Asked:How do your internal organs stay in place? --- David, Carletonville, South AfricaMarshall Brain Answers:It's a good question. For example, you can think of your small intestine as a super-flexible tube that is about 20 feet long. Your large ...

In this episode of BrainStuff, Marshall explains the physics behind satellites and orbits.

You Asked:What would happen if you took alcohol intravenously? --- Balaram, Bhubaneswar, IndiaMarshall Brain Answers:First let's state up front that injecting alcohol is a bad idea for reasons we will discuss below. Most people get their The thing ab ...

You Asked:Can you die from eating too many bananas? --- Yeng, Minneapolis, Minn.Marshall Brain Answers:Let's start with the basics. According to the Therefore, the place that people might get the idea that bananas could be toxic probably comes from t ...

You Asked:What is the difference between regular gasoline and natural gas? --- Sarah, St. Louis, Mo.Marshall Brain Answers:Let's start with their similarity. Both The difference is the number of atoms in each molecule. With natural gas, the molecule ...

You Asked:How does a door closer work? --- Sonny, Ventnor City, N.J.Marshall Brain Answers:There are two kinds of door closers you will typically see in the wild. The first looks like this and is typically used on screen doors and storm doors:Inside ...

You Asked:What would happen if the Earth stood still for one full minute? --- Balasubramaniam, Mumbai, IndiaMarshall Brain Answers:Right now the What this means is that everything on the earth is also traveling at 1,000 miles per hour. So if a giant ...

Sea level is an important measurement, but it's also a complicated one. Find out why in this episode of BrainStuff.

Herbicides like Roundup are products that inhibit plant and weed growth in a very specific way. Explore the biochemistry behind glyphosphate-based herbicides in this episode of HowStuffWorks.com.

You Asked:How do you crimp aluminum rain gutters to fit inside the elbows? --- Bob, Fogelsville, Pa.Marshall Brain Answers:There are two kinds of If you have ever wondered about the details of how one of these machines makes the bends, watch The alte ...

You Asked:How does an unborn child receive food while in the womb? --- Capt, Raigarh, IndiaMarshall Brain Answers:A baby gets all of his food, as well as his oxygen and water, from its mother's bloodstream. The baby's waste products (like C02) are di ...

You Asked:How fast does blood flow throughout the human body? --- Matthew, Hudson, OhioMarshall Brain Answers:This video provides a nice summary of the flow of blood through the body:So the blood comes out of the How long does the round trip take? A ...

You Asked:How is mercury made, and where does it come from? --- Jon, Las Vegas, Nev.Marshall Brain answered:Mercury is usually produced from cinnabar rock, also known as mercury ore. The rock contains mercury sulfide, which gives it its red color. To ...

You Asked:What would happen if red ants crawled into your laptop? --- Ramya, Tirupati, IndiaMarshall Brain Answered:For some reason, some species of ants are attracted to electronic devices. Ants do a lot of damage to electrical equipment like air co ...

How does speed control work in an electric golf cart? --- Stephen, Pittsboro, N.C.A golf cart is a pretty simple device. It has a set of In the simplest possible speed controller, the accelerator pedal is just a big switch. When you press the acceler ...

You asked:How do car batteries work? --- Ike, Charlotte, N.C.Marshall Brain answered:A car battery is based on lead-acid battery technology. This technology has been around for decades, it is relatively inexpensive, it is reliable even in the harsh e ...

You Asked:Marshall Brain Answered:That has got to be frustrating.Usually if it is an operating system or driver problem, you will get a blue screen or the computer will reset and reboot. But when it just turns off for no reason... let me give you two ...

You Asked:Marshall Brain Answered:If you look at the ingredient label for just about any kind of cheese puff, the first ingredient is corn meal and the second ingredient is oil. All of the other ingredients are in the coating.The basic idea is to tak ...