Scientists believe that the solar system took billions of years to develop! This video gives an overview of solar system basics - its beginnings, gravity, planets orbits.

Epidote might just look like a pretty little crystal, but it has a secret. thanks to the high-pressure circumstances where it forms, we can use it to help us uncover the origins of life on our planet, and maybe even find signs of life on...

Earth and Mars were likely generated by regular collisions between giant Moon-to-Mars-size rocks, rather than tiny pebbles clumping together.

Why is Earth is a blue planet? Because it's covered in water! Where did Earth's water come from? Of course, water isn't unique to our planet. The origin of water traces beyond the solar system to the earliest days of the universe. Here's...

How did life on Earth get started? Did life on Earth originate on another planet? Either Mars, or in a distant solar system? Could Earth life have spread to have seeded life elsewhere? Let's see what modern science has to say about the...

Water covers over 70% of the Earth, cycling from the oceans and rivers to the clouds and back again. It even makes up about 60% of our bodies. But in the rest of the solar system, liquid water is almost impossible to find. So how did our...

NASA's Dragonfly -- a robotic rotorcraft-lander that's designed to hop across the surface of an extraterrestrial body -- is set to voyage deep into the solar system to explore Titan, Saturn's largest moon, in 2026. Planetary scientist...

With a solid understanding of biology on the small scale under our belts, it's time for the long view - for the next twelve weeks, we'll be learning how the living things that we've studied interact with and influence each other and...

(NOTE: This talk was given in 2010, and this field of science has developed quickly since then. Read "Criticisms & updates" below for more details.) Astronomer Dimitar Sasselov and his colleagues search for Earth-like planets that may,...

Hank's news this week informs us on a couple of crazy science experiments, updates us on some earlier topics (dangerous asteroids and ancient phallic rock art), and briefs us on a new study that seeks to find the evolutionary origins of...

Hank's news this week informs us on a couple of crazy science experiments, updates us on some earlier topics (dangerous asteroids and ancient phallic rock art), and briefs us on a new study that seeks to find the evolutionary origins of...

Memory foam, air purifiers, scratch-resistant lenses: these are just a few of the everyday items originally developed for space missions. Aerospace engineer Eric Hinterman invites us to dream big and imagine what technological...

We might be closer to figuring out how our solar system was born and NASA has two finalists for its next New Frontiers mission.

Blue Origin announced a a new lunar lander, Blue Moon, that will be delivering supplies, and eventually astronauts to the lunar surface within the next 5 years, and robots like Chang’e-4 are giving us an early glimpse at what we might...

Who are the Adivasis? A group that is officially considered by the Indian and other South Asian governments to be the “original native inhabitants” of their land? Well the term has diverse connotations, but in today's video we are going...

We’ve assembled an all-star group of ecologists, naturalists, and creative thinkers for an urgent but hopeful conversation about the environmental pressures bearing down on Earth’s rich spectrum of species. Join legendary oceanographer...

This video explores the origins of life on Earth, focusing on the early oceans and the role of organic compounds. It discusses the first living organisms and highlights the emergence of autotrophs. This video is part of the 11-part...

The video discusses the formation of Earth and the solar system. It presents the nebular theory, which suggests that Earth and the other planets in our solar system developed from a cloud of gas and dust in space. The video provides a...

From the archives: journalist, environmentalist and author of Uncertain Peril: Genetic Engineering and the Future of Seeds, Claire Hope Cummings speaks out on behalf of the natural world. Cummings argues for a radical new approach to...

Delving further into Earth's history, we explore the Precambrian era, the longest era spanning nearly 4 billion years and accounting for over 85% of our planet's history. Join us as we uncover remnants of this ancient era in North...

While we like to imagine little green men, it's far more likely that life on other planets will be microbial. Planetary scientist Nathalie Cabrol takes us inside the search for microbes on Mars, a hunt which counterintuitively leads us...

Look up to the night sky just before dawn, or after dusk, and you might see a faint column of light extending up from the horizon. That luminous glow is the zodiacal light, or sunlight reflected toward Earth by a cloud...

In this video I look at Hieronymus Bosch’s The Garden of Earthly Delights. Nobody painted Hell quite like Bosch. What we think of as Hell, and certainly what Bosch thought of as Hell is not based on the bible....

Astrobiologists like Jason Dworkin are keenly interested in the origins of life on Earth, but the evidence that they seek was erased long ago by Earth’s geology and chemistry. Fortunately, asteroids like Bennu preserve the solar...