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Why is there fluoride-free toothpaste?

health.howstuffworks.com/wellness/oral-care/products/fluoride-free-toothpaste.htm

Fluoride-free toothpaste is an option, but why would you want to use it? Find out why there is fluoride-free toothpaste.

How are bendy straws made?

science.howstuffworks.com/innovation/everyday-innovations/how-bendy-straws-are-made.htm

It bends to your will, it has nifty ridges, and it allows patients and little kids alike to slurp along with everyone else. How did the flexible straw begin its days?

Sunda Tiger: A Critically Endangered Subspecies in Sumatra

animals.howstuffworks.com/endangered-species/sunda-tiger.htm

The Sunda tiger, also known as the Sumatran tiger (Panthera tigris sumatrae), is a striking species that can be found on Sumatra, an island in Indonesia. This tiger subspecies is the smallest among all living tiger species and is uniquely adapted to its tropical rainforest habitat.

How Many Countries of South America Can You Name?

history.howstuffworks.com/world-history/countries-of-south-america.htm

From the Amazon Rainforest to the Andes Mountains, the fourth-largest continent is a treasure trove of natural wonders and historical sites. Let's explore the countries of South America and take a look at what makes each one unique.

The Easiest Font to Read Is Already on Your Phone

electronics.howstuffworks.com/everyday-tech/easiest-font-to-read.htm

When it comes to typing a message, font choice can sometimes add a creative touch to your work, but for mass media formats like newspapers, academic papers, TV and popular web sites, sticking to a legible font is often more important than the flourish of decorative fonts.

9 Adder Snake Species That Pack a Nasty Bite

animals.howstuffworks.com/snakes/adder-snake.htm

Adder snakes are some of the most fascinating and misunderstood reptiles in the world. Known for their distinctive patterns and venomous bites, adders belong to the viper family and are native to various parts of Europe, Asia and Africa.

Anaconda: Snake of Frighteningly Enormous Proportions

animals.howstuffworks.com/snakes/anaconda-snake.htm

When you think of the word "anaconda," it probably conjures up images of massive, slithering serpents lurking in the waters of South America, right? Well, that's not too far off! The anaconda snake, scientifically known as Eunectes murinus, is the stuff of legends.

The Slender Parrot Snake Can Grow to More Than 5 Feet Long

animals.howstuffworks.com/snakes/parrot-snake.htm

Today, we're going to talk about a snake that glides through the trees of Central and South America: the parrot snake: These slender, vibrant creatures might look delicate, but they're expert hunters with some cool adaptations that help them thrive in the tropical forests.

The Rough Earth Snakes Blends in With Its Environment

animals.howstuffworks.com/snakes/rough-earth-snake.htm

We're about to dive into the world of a snake you might not have heard much about: the rough earth snake. This small, secretive snake is found in various parts of the United States, and while it might not be as flashy as some other reptiles, it's got some nifty features that make it an important part of its ecosystem.

Sidewinder Snake Navigates Loose Sand With Special Scales

animals.howstuffworks.com/snakes/sidewinder-snake.htm

Let's talk about one of the coolest movers and shakers in the desert world: the sidewinder snake. Known for its unique way of getting around, this snake has mastered the art of slithering across scorching desert sands in the hottest places on Earth.

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