Being a parent requires a lot of time and energy, but some animals are extremely devoted to caring for their young, and these five might not be the ones you would expect.

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* Viewer discretion advised. This video includes discussion of mature topics and may be inappropriate for some audiences.

Did you know that almost 150 million people worldwide are born intersex -- with biology that doesn't fit the...

Cognitive scientist Donald Hoffman is trying to answer a big question: Do we experience the world as it really is ... or as we need it to be? In this ever so slightly mind-blowing talk, he ponders how our minds construct reality for us.

Thanks to spotted hyenas’ unusual social structure, males experience a tough life of solitude, harassment, and deprivation.

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Their signature black and white color scheme is part of what makes pandas instantly recognizable - but not many mammals are black and white, so... why do they look like that?

In the early 1990s, a scandal rocked evolutionary biology: scientists discovered that songbirds -- once thought to be strictly monogamous -- engaged in what's politely called "extra-pair copulation." In this unforgettable biology lesson...

Eliminating certain species of mosquitoes could make summertime more enjoyable and cut down on the transmission of certain diseases. And scientists are looking into doing this by manipulating a single gene!

How do we make sense of a world that doesn't? By looking in unexpected places, says mathematician Eugenia Cheng. She explains how applying concepts from abstract mathematics to daily life can lead us to a deeper understanding of things...

Some lizards will lose a tail to avoid becoming a meal, but there's more than one reason for animals to self-amputate.

Why did so many birds ditch penises? Maybe it was natural or sexual selection, an accident, or in exchange for something way more useful to them. Whatever the reason, penis loss goes to show that internal fertilization doesn’t require a...

In a single year, there are 200-300 million cases of malaria and 50-100 million cases of dengue fever worldwide. So: Why haven't we found a way to effectively kill mosquitos yet? Hadyn Parry presents a fascinating solution: genetically...

Paul Andersen explains how organisms use information to communicate with each other. Signals are used by bees doing the waggle dance to communicate the location of flowers. Territorial markings are used by wolves to establish...

The founder of Sirius XM satellite radio, Martine Rothblatt now heads up a drug company that makes life-saving medicines for rare diseases (including one drug that saved her own daughter's life). Meanwhile she is working to preserve the...

If it smells like delicious buttered popcorn when you are in a middle of the forest, it’s not because there’s a movie theater nearby, but Binturongs, arboreal carnivore, might be.

Who doesn’t love to gaze at a beautiful butterfly fluttering by? Aesthetically speaking, they are simply wonderful to watch. Wonderful, that is, unless you are getting a rare glimpse of pheromone laced coremata.

Join us as we explore flower parts, pollination, and double fertilization in angiosperms. We'll also talk about the importance of pollinators, like bees, and the role they play. 00:00 Intro 1:34 What are Angiosperms? 1:48 Fruit 2:29...

Dimples! They're so cute, but surprisingly mysterious! What causes them naturally and how can we make them happen?

Hank eases our minds about the alleged bacon shortage, and informs us of some actual meat shortages we may see the effects of in the coming years.

After leading a well-established life as a pastor, father and husband, Paula Stone Williams could no longer deny her truth and transitioned. In this conversational and at times humorous reflection, Williams offers her perspective on the...

The ubiquitous yin-yang symbol holds its roots in Taoism/Daoism, a Chinese religion and philosophy. The yin, the dark swirl, is associated with shadows, femininity, and the trough of a wave; the yang, the light swirl, represents...

Mona Lisa is one of the best-known faces on the planet. But would you recognize an image of Leonardo da Vinci? Illustrator Siegfried Woldhek uses some thoughtful image-analysis techniques to find what he believes is the true face...

Thanks to a couple of Norwegian musicians, a lot of people have become obsessed with one question: What does the fox say? It turns out that foxes "say" lots of different things depending on the situation, and if you think the song is...

Investor and prankster Yossi Vardi delivers a ballsy lecture on the dangers of blogging. Specifically, for men.

In high school biology, we learn that humans are born with either XX or XY chromosomes, and that a person’s internal and external sex organs match those chromosomes. It turns out, however, that sex isn’t that straightforward.