The energy required to grow, birth and raise young is intense, so it's only fair that the female body has some tricks to make sure reproducing is worth it.
From cryptic choice to immune system sperm blockers, the female reproductive system can be a literal maze for those seeking to gain access to her eggs.
In the battle of the sexes, this is females fight ... Show More
May 29
Sex is Weird 4: How to be hot according to nature
Do animals fall in love at first sight?Every species has different traits that are 'attractive' — they're showing off their DIY skills making a bower, vibrating sexy fruit fly songs, puffing up a wattle, or just having really massive moose… antlers.Is this innate attraction like ... Show More
25m 46s
Aug 2025
Greatest Mysteries of the World Episode 1
From ancient enigmas to modern-day puzzles, the world is filled with unsolved mysteries. In "Greatest Mysteries of the World" we'll investigate the most perplexing questions that have baffled humanity. Join us as we explore lost civilizations, unexplained phenomena, and the endur ... Show More
31m 47s
May 2025
Into the Thick of It: Jungle Adventure | Backyardigans Guess & Go
Grab your safari gear and join the Backyardigans - Pablo, Uniqua and Tyrone - on an exciting exploration into to the heart of the JUNGLE! With help from their flying pal, Yardbird, they’ll journey to a mysterious destination filled with silly monkeys, a muddy pond, and pickleball ... Show More
20m 28s
Feb 2023
Great Mysteries of Physics - trailer
"There is nothing new to discover in physics", declared the British physicist Lord Kelvin in 1900. That is no longer true. Today it is becoming increasingly clear that there are problems that physics, as we know it, doesn't seem to be able to solve. Perhaps we just need more data ... Show More
2m 45s