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DNews Earth Videos

Jun 14, 2013
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The Difference Between a Typhoon and a Hurricane
It's among the strongest storms ever recorded on the planet. Super Typhoon Haiyan slammed into the Philippines with winds touching 235 miles per hour. Trace looks at how this typhoon differs from hurricanes, and how such a monster storm came to be.
How Sugars Help Plants Tell Time
Turns out living animals aren't the only ones with internal clocks. Plants also have them and they're driven by sugar! Anthony explains how they work.
4 Ways Algae is Awesome
Algae, that sludge you find in lakes and dirty swimming pools, is set to revolutionize how we power our lives! And we're not talking science fiction: This is science fact! Trace lists four ways algae is totally awesome!
The Mystery of the Earth's Core Explained
We've been to the moon but we've barely scratched the surface of our own planet! Trace explains what it would take for humans to see into the center of the Earth and why we haven't yet made the trek.
Why Do Leaves Change Color in the Fall?
One of the hallmarks of autumn is the beautiful array of leaves changing color. But why do leaves change from green into reds, oranges, yellows, and browns in the first place? Trace has all the answers.
How Fruit Came to the New World
Would it surprise you that the fruit in all-American apple pie isn't American at all? It originates from parts of Asia! The same goes for many fruits and vegetables we eat. Trace shows us the Old World foods that became staples of New World diets.
What Happens When a New Element is Discovered
To the dismay of high school students everywhere, yet another element has been discovered and added to the ever-growing periodic table. Trace shows us what goes into discovering a new element and how one is added to the official list.
When Earth Can't Produce Enough Food
Modern-day humans require a lot of food to keep going, and they're craving more than ever. But as the world population continues its inevitable march upwards, the question must be asked: What happens when the planet is no longer able to keep up?
How We Name Big Storms
Hurricane season is here, and for active storm seasons that means hearing the names of many systems whipping their way across the world's oceans. Where do these names come from? And how do named storms differ from other ones? Trace has the answers.
Should We Control Wildfires?
The Rim Fire has spread into Yosemite, one of the most cherished national parks and has done untold damage to a huge swath of once-scenic landscape. But as Anthony tells us, while the flames may look terrible, fires like these may not be so bad.
How Geysers Erupt
Geysers are more than just pretty eruptions of water and steam -- they're complicated geologic events. But how do they work? We thought we knew, but turns out we had it all wrong.
How to Stop a Tornado
As those living in America's heartland have long known, tornadoes are not a force to be reckoned with, or are they? Trace looks at whether drastic measures actually stop a killer tornado in its tracks.
Is 'After Earth' Our Future?
The new Will and Jaden Smith film "After Earth" takes place 1000 years after a disaster forced humans to leave the planet. Biologist and author Dr. Joseph Levine, who worked with producers of the film, argues for a closer look at the relationship ...
Giant Tornado Hits Oklahoma
The giant tornado that tore through Moore, Oklahoma has been called one of the more destructive tornadoes in U.S. history. Anthony looks at how massive twisters like this form.
Kickstarter Replaces Lights with Glowing Plants
If you thought glowing plants were science fiction from Pandora ... you're wrong! Scientists in San Francisco have created plants that glow brightly enough to light your home! Anthony chats with the creators to learn more about their enlightening ...
Why We Need Rare Earth Elements
Rare earth elements are crucial to the technology around us -- they're in phones, computers, TVs, and hybrid cars. Why are they so important? And why are they so difficult to mine? Anthony takes a look.
Volcano Lightning: How Does it Happen?
Lightning is one of mother nature's most spectacular phenomena. But add lightning to a volcanic eruption and the event seems otherworldly! In this DNews video, Trace has all the details on the atmospheric conditions that bring these two forces to ...
Dark Lightning is Real & Radioactive
Just when you thought lightning thunderstorms couldn't get crazier, we now have invisible radioactive lightning! Anthony has all the details on this so-called "Dark Lightning," and the potentially harmful implication it poses for airline passengers.
Plants Can Hear You!
Plants can not only hear you, they can also feel you, smell you, and remember things! In this DNews video, Trace shows us how plants know what they know.
Climate Change Threatens Coffee and Chocolate
Chocolate and Coffee- GONE!? That is a strong possibility. Watch to find out the details.
Flushed Fish Invading Oceans
Flushing your fish down the toilet can be disastrous to the ocean's ecosystem, here's why!
Can We Build Cities Underwater?
What's easier to explore: outer space or the ocean? Laci's got the surprising answer -- and more -- right here!
Underwater Volcano Erupts as Predicted
Scientists have successfully predicted the eruption of an underwater volcano for the first time ever, proving that what's been done on land, can be done in the oceans. Martin Berman reports.
What's an Ocean Garbage Patch?
How much trash is in our oceans? And does it look more like a floating landfill or a plastic soup? Anna Cummins, co-founder of the 5 Gyres Project, gives Jorge Ribas the facts about her recent trip into the Atlantic Garbage Patch.
Ocean Hall Swims to Surface
From a prehistoric shark to a giant squid, the Smithsonian's new Sant Ocean Hall lets visitors experience the briny deep in unexpected ways. Jorge Ribas takes a tour.
Oceans Provide Flood of Info
With 3,000 monitors floating through the world's oceans at once, scientists are getting a flood of information about our seas. Discovery News' James Williams dives into the story.
Can Jellyfish Affect Climate Change ?
The collective motions of jellyfish, plankton, and other swimmers may be just as important to ocean currents as tides and wind. But just how that changes climate is still a mystery.
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