There are all kinds of ways that a spider can catch its prey, but few species are as extreme as the slingshot spider!

Katherine is back with more information about cats and Jessi from Animal Wonders shares Gonzo the crimson-rumped toucanet.

You think your tummy rumbles? Meet the ghost crab — it growls using teeth inside its stomach, and not because it’s feeling peckish!

Explore biomagnification which can happen when toxins become more highly concentrated when moving up through trophic levels in the food chain. Uncontrolled use of DDT is used in video as an example. Learn why bioaccumulation can occur in...

Could we one day live on Mars? Reid Reimers explains Mars One could help colonize the red planet.

Swami Dayananda Saraswati unravels the parallel paths of personal development and attaining true compassion. He walks us through each step of self-realization, from helpless infancy to the fearless act of caring for others.

Enceladus’ environment could totally be habitable for at least one real-world microbe and we just found the oldest supernova.

Our new evolution simulator reveals that extinction often happens when conditions change quickly.

Trees need water to grow, so how do Redwood trees get so big, despite the fact that it gets so dry?



First Grade Next Generation Science

Standards

Cr

osscutting Concept:...

Eat facts, Shark Week! Hank takes you on a tour of the shark's amazing anatomy, including the many adaptations that made it a great predator -- despite not having any bones.

Some bacteria seem to be using a type of memory to help them alter future behaviors, based on their past experiences.

They're cute, they're lovable, and judging by the 26 billion views on over 2 million YouTube videos of them, one thing is certain: cats are very entertaining. But their strange feline behaviors, both amusing and baffling, leave many of...

The city has just opened its one-of-a-kind Faberge Egg Museum, with a single egg displayed on each floor of a 100-story building -- and the world's most notorious jewel thief already has her eyes on the prize. Can you help the thief...

When camels drink, they do so at a rate that would kill most other animals. But where does all of that water go? Hint: It's not their humps!

Some tidally-locked exoplanets might actually be more habitable than astronomers initially thought, and we have some ideas about how Peter Pan disks can last so much longer than other protoplanetary disks.

Spider venom can stop your heart within minutes, cause unimaginable pain -- and potentially save your life, says zoologist Michel Dugon. As a tarantula crawls up and down his arm, Dugon explains the medical properties of this potent...

From the bell that hasn't stopped ringing, to observing evolution in action, SciShow presents 6 of the Longest Experiments Ever.

Just how long could you survive on the surface of Mars without a spacesuit? Find out what it'd be like to stand on the surface of Mars, if you forgot to pack properly.

Samples from the Curiosity rover suggest that Mars had a potentially habitable lake in its past, and gravitational lensing has helped scientists weigh a star!

Artist Theo Jansen demonstrates the amazingly lifelike kinetic sculptures he builds from plastic tubes and lemonade bottles. His creatures are designed to move -- and even survive -- on their own.

Salmon make a hardcore journey upstream to their spawning grounds to reproduce, and it almost always ends with death. But some live to reproduce again, and more than once!

Jessi and Squeaks love science mysteries, and today they've teamed up with their friend, Dino, to try and solve one of the biggest mysteries of all: what happened to the dinosaurs?

Scientists conduct some pretty cool research experiments for Mars here on Earth. These terrestrial analogues have revealed some incredible discoveries!

How do spacecraft survive the enormous heat and crushing g's of re-entry? And why don't astronauts actually land in rockets, like they do in cartoons and comic books? SciShow Space explains!