In this video Paul Andersen shows you how to construct explanations in a mini-lesson on evidence-based reasoning. Two examples are included in the video and two additional examples are included in the linked thinking slides. <br/>

In this video Paul Andersen shows you how to revise explanations with evidence in a mini-lesson on evaluating explanations with evidence. Two examples are included in the video and two additional examples are included in the linked...

Everywhere you look on Earth, you’ll find wonderful and diverse living things, from tiny tardigrades to soaring sequoias. And incredibly, everything alive today, and everything that’s ever lived, is related. In this episode of Crash...

With tart humor, Hayley Yeates makes the case that investing in cultural diversity is just as important as fostering gender diversity.

TED Fellow and equity bioengineer Erika Moore investigates how cells controlling inflammation behave differently depending on a patient's background. By focusing on the "who" behind the disease, Moore is uncovering why certain diseases...

Neil deGrasse Tyson was asked by the Templeton Foundation to answer the question "Does the Universe Have a Purpose". Then he read his answer aloud and I drew some pictures for it.

In the past decade, astronomers have discovered interstellar objects, including a 2014 meteor that collided with Earth and 'Oumuamua in 2017. These objects, moving too fast to be bound by the Sun's gravity, have sparked questions about...

Astrophysicist Avi Loeb believes we are likely not alone in the universe. He criticizes the approach of simply waiting for contact through radio signals, suggesting instead that we should actively search for evidence of other life. He...

Here's a conundrum: the same aerosol pollutants that harm human health also help cool the climate, says atmospheric scientist Sarah J. Doherty. Is there a way to clean up the air without warming the planet? Exploring the unintended...

We know a lot about fossils, but there's one thing about all those long-dead organisms that's hard to figure out -- their sex. So let's talk about the ways we can try to determine whether those T. rex bones came from a male or a...

The Milky Way is often described as measuring 100,000 light years across and containing the mass of a trillion Suns. But our home galaxy is actually far bigger, and might be much less massive. Astronomers aren't sure what the exact stats...

Even when animal traps are humane, it seems pretty obvious that animals wouldn't want to get caught. But sometimes, there are oddballs that love getting trapped. Here's what we know about what can make some animals so darn trap happy.

So, rocks are hard. But the scale we use to rank them, the Mohs scale, is only really good at quantifying that for one kind of hardness, and topaz is a perfect stone to talk about to explain that. And you can check it out in our SciShow...

As the 19th century gave way to the 20th, Black Americans were searching for ways to think about how and where they would fit into a post-slavery society. There were several competing schools of thought. Booker T. Washington and W.E.B....

If we want to avoid a climate disaster, we need much more radical leadership, says Jim Snabe, who knows a thing or two about leadership as chairman of the world's largest maritime shipping company. In a stirring talk, he encourages...

Can keeping calm before a surgery reduce negative outcomes? More than one study says "Yes."

Have you ever seen cat pheromones, sometimes branded as Feliway, that promise to address problem behaviors like cat scratching, fighting, and stress? These products are based on real science. But do they work?

The Sun isn’t the only celestial body in the solar system to boast spots of its own. Mercury, too, has its fair share, and they’re worth wondering about.

The universe is precisely 13.8 billion year old - or so our best scientific methods tell us. But how do you learn the age of the universe when there’s no trace left of its beginnings?

From our deepest origins in Africa all the way to the Americas, by looking at the fossils and archaeological materials we have been able to trace the path our ancestors took during the short window of time when we took over the world.

Bats pretty much appear in the fossil record as recognizable, full-on, flying bats. And they show up on all of the continents, except Antarctica, around the same time. So where did bats come from? And which of the many weird features...

Long necks gave sauropods a huge advantage when it came to food, but not in the way you think. And this benefit would allow them to become the biggest terrestrial animals of all time!

Untangling the origins of Beelzebufo -- the giant frog that lived alongside the dinosaurs -- turns out to be one of the most bedeviling problems in the history of amphibians.

This video contains images and video of snakes and spiders. It's possible Euchambersia possessed venom about 20 million years before the first lizards and over 150 million years before the first snakes evolved. We’ve teamed up Sarah...