Topic: biology

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Which life form really dominates Earth?

In 2018, there are around 7.6 billion people on the planet, but weigh us all together on a giant scale and we only make up 1/10,000 of Earth’s biomass. What is biomass? And what life forms dominate the rest of the pla...

Fabulous Food Chains and The Dirt on Decomposers

Everyone eats, right? But how does that food get the energy to power you? In this episode of Crash Course Kids, Sabrina talks about the way energy moves, or flows, through an ecosystem and how that movement forms Food...

Microworld Unseen: SEM images of the Pale Grass Blue butterfly

Everyday objects and life forms, magnified hundreds, thousands, even tens of thousands times, what would you see? That's what we want to show in Microworld Unseen, a new project from Beauty of Science, in which we use...

A giant panda gives birth to twin baby pandas (and doesn’t realize she’s raising both)

Vets wake up in the middle of the night at Chengdu Research Base of Giant Panda Breeding in Sichuan province. Pregnant panda Li Li is about to give birth, and the vets are there to assist and witness the moment. When ...

A ladybug life cycle time lapse

Bright yellow eggs sit attached to a branch. Though they're vulnerable to predators (including their hatching siblings), many eggs will yield larvae that will go through metamorphosis and turn into ladybugs (coccinell...

Scallops have lots of tiny eyes that act like tiny telescopes

Things you may not know about the marine bivalve molluscs called Pectinidae or scallops, as seen in the Hakai Institute video above: 1. They can swim freely for short distances to escape predators or relocate them...

Sting, prey, raft: The successful behaviors of red imported fire ants

Is this one of the most detailed videos ever made of a fire ant stinging a human? In this Ant Lab video, Dr. Adrian Smith captures up-close footage of a red imported fire ant biting, licking, and stinging. He also doc...

Firefly Experience: Lightning bugs light the Iowa woods

Walk the woods near Fairfield, Iowa as the fireflies come out to sparkle and glow at twilight. Photographer Radim Schreiber sees the sparkling forest as reflection of the stars in the Milky Way and has been filming t...

The Wood Wide Web: How trees secretly talk to and share with each other

Trees secretly talk to each other underground. They're passing information and resources to and from each other through a network of mycorrhizal fungi—mykós means fungus and riza means root in Greek—a mat of long, thi...

It’s Okay to Fart: What are farts made of and why are they funny?

Farts can be giggle-worthy and gross, but every person on Earth farts, as well as lots of animals... so why don't we know more about them? Even people throughout history have wrestled with what farts are and how they ...

How is a nautilus different from a squid?

Nautiluses are amazing creatures. They've survived five mass extinctions and can learn and remember, as demonstrated in maze experiments. They're also cephalopods, but they do a lot of things differently from octopuse...

The Science of Hearing

The ability to recognize sounds and identify their location is possible thanks to the auditory system. That’s comprised of two main parts: the ear, and the brain. The ear’s task is to convert sound energy into neural ...

The Cephalopod Empire in Woods Hole, Massachusetts

Bret Grasse lovingly calls the Cephalopod Operations division at the Marine Biological Laboratory (MBL) in Woods Hole, Massachusetts the “cephalopod empire.” The lab houses roughly 2,000 to 3,000 cephalopods—likely th...

You’d Never Guess What an Acorn Woodpecker Eats – Deep Look

Acorn Woodpeckers eat insects, delicious sap, oak flowers full of pollen... and yes, acorns. They stock up on these bitter but dependable nuts from coast live oaks and California black oaks, storing them in tree trunk...

How To Grow Coral

When visitors at Georgia Aquarium gaze upon the diverse array of colorful corals, [biologist Kim] Stone says many mistake the often stationary specimens for beautiful rocks. But corals are actually living animals—they...

Camels vs. Cactus: Eating a prickly pear cactus with 6-inch needles

There's something about the prickly pear cactus that these camels like. And they like it enough to brave the six-inch needles on the pads or cladodes. Watch them eat in this video from Camel and Friends, a YouTube cha...

An up-close look at tardigrades and their poop

It is surely the stuff of science fiction: An extraordinary being arrives on Earth that can withstand a tortuous array of conditions: boiling, freezing, tremendous atmospheric pressure, near total dehydration, and exp...

Plastics 101: What is plastic and how is it made?

Once a completely natural product, much of today's plastic is man-made and largely dependent upon fossil fuels. From polymers to nurdles, learn how plastic is created and what we can do to slow the lasting repercussio...

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