Diseases from mosquito bites kill hundreds of thousands of people every year. Now the Zika virus has spread throughout Brazil, and the World Health Organization has declared Zika a public health emergency.

Alright folks, settle down. The Superbowl is just around the corner, we're excited too, but let's stay focused here. It's all about the snacks, so today we're slamming you with some next level DIY chemistry advice to help you step up your nacho game. The secret ingredient? A little thing called sodium citrate. My advice to you is to order some now, watch the video, and get ready for the Super Bowl of a lifetime.

A huge snowstorm could dump more than two feet of snow all over the East Coast, and that means trillions and trillions of tiny snowflakes. Through advances in crystallography, scientists have learned a lot about the structure of snowflakes. While they all start pretty much the same, once they start crystallizing, it’s true that no two snowflakes are alike. In fact, the number of possible shapes is staggering. Reactions Audience Survey: http://bit.ly/ReactionsSurvey.

You may have heard that chocolate is high on the list of things that dogs should not be eating, but have you ever wondered why? Today we're taking a closer look at why one molecule, theobromine, is the central culprit to chocolate's toxicity to dogs.

Honey is great. It’s perfect for drizzling over your toast or stirring into your tea, it’s also the special ingredient in your favorite lip balm. What most people don’t know is that during the trip from the flower in the field to the jar on your table, honey spends an awful lot of time in a bee’s gut.

New Years Eve is just around the corner, and just in case you celebrate a little too hard, we're offering you some chemistry fueled tips on how to stave that hangover. You know, to better help you not drop the ball so you can get a head start on your resolutions. Happy New Years folks!

As the days get shorter, darker and colder, people seem to be getting gloomier. For folks with seasonal affective disorder, the changing seasons can make them sadder than most, to the point of depression. Why does this happen? What can someone with the condition do about it? Reactions has the chemistry to explain this disorder and some possible treatments.

Star Wars VII: The Force Awakens with its intense plot will have you on the edge-of-your-seat. But is it possible to create a real-life lightsaber or build a Death Star laser?

Dull knives and not having a knife sharpener is a drag. This chemistry life hack is going to have you going straight MacGyver up on that lame point of yours.

You have probably had the burning sensation of eating a jalapeno or other tear-inducing pepper. What causes this painful fire in your mouth? The short answer is capsaicin. But what exactly is capsaicin? How does it work? Why do people drink milk to relieve the pain? Reactions has the chemistry to answer all of these sizzling questions.