There are a few different types of pregnancy tests but they all utilize the same chemical reaction to detect hCG.

Learn More

With at least 17 different forms of contraception available, it can get confusing remembering how each one works, and their strengths and weaknesses. We summarized some of the more popular ones, and added a biology lesson for free!

Learn More

Both gonorrhea and syphilis can be transmitted through oral sex. If this is news to you, you're not alone, one in five teens were unaware these diseases could be transmitted that way. No wonder experts refer to the increase in STD as a "hidden epidemic".

Learn More

Whether you're pecking granny's cheek or tangling tongues with that special someone, there's a lot of biology in a kiss. From lip action to brain power, kissing is a coordinated affair of chemicals, electricity, and fireworks.

Learn More

What you need to know about "fooling around" and other forms of sexual expression.

Learn More

Oh the dreaded Pap test. Though it's quick, simple and safe, it can make any woman feel pretty awkward or uncomfortable. So, why do doctors put us females through it!?

Learn More

Although it is common to say “he/she is so cute,” researchers have found that smell plays an important role in the art of attraction for both animals and humans.

Learn More

In Chemistry, we learn about ionic forces that dictate the attraction between positively (+) and negatively charged (-) ions. But the force that governs attraction between individuals is, in my opinion, a study in BIOLOGY!

Learn More

Waking up with an erection is something all guys experience. And if the topic has ever come up (pardon the pun) with you and your buddies, you’ve probably heard different opinions why you get morning erections, most of which might be wrong.

Learn More

Did you know that North American women have used tampons since the 1930s? Ever wondered what they're made of now and what they were made of back then…or even earlier?

Learn More