SciShow
News | Where Did Domesticated Horses Come From?
New information has helped us understand where domestic horses came from. And by counting some tree rings, researchers were able to find evidence of Norse presence in the Americas in 1021 CE.
SciShow
Quiz Show: How Well Do You Really Know the Human Body?
It's another round of Hank facing off against one of the VidCon elite—this time, Executive Vice President Colin Hickey. Will Colin's surprise expertise help him dominate?
Wonderscape
Exploring Tree Anatomy: From Roots to Leaves
Step outside and learn about the fascinating structure of trees! From the sturdy trunks that we use for wood to the vibrant leaves that capture sunlight, this guide covers the essential parts of a tree and their functions. Understand how...
Professor Dave Explains
Core Principles and Concepts of Dendrochronology
Now that we know what dendrochronology is, it's time to dig into the core principles and concepts of this discipline, so that we can better understand how dendrochronologists think and what they do. Data acquisition and tree ring...
Professor Dave Explains
Applications of Dendrochronology
Now that we know a bit about what dendrochronology is and how it's done, what can it be used for? In fact, tree ring studies are highly relevant in a multitude of other fields, including archaeology, ecology, forestry, paleoclimatology,...
Professor Dave Explains
Techniques for Sampling and Analysis in Dendrochronology
We now know what dendrochronologists do. They examine tree rings. But precisely how do they do this? How do they collect the data? How do they analyze it? This is a very involved question, but let's try to answer it by investigating the...
NASA
Gravity Assist: Our Sun, Our Life, with Vladimir Airapetian
Vladimir Airapetian, scientist at NASA’s Goddard Space Flight Center, explains what researchers hope to find as they gaze beyond our solar system.
NASA
Gravity Assist: Sunspots and Solar Flares with Alex Young
NASA Chief Scientist Jim Green sits down with solar scientist Alex Young to discuss the Sun’s powerful explosions.
NASA
Human Influence on Global Droughts Goes Back 100 Years
Human-generated greenhouse gases and atmospheric particles were affecting global drought risk as far back as the early 20th century, according to a study from NASA's Goddard Institute for Space Studies (GISS) in New York City. The study,...
Professor Dave Explains
The Structure of Wood and Ring Anomalies
So we know that dendrochronologists study tree rings, but how do these form? Do they form in precisely the same way all the time? They don't, which provides enormous challenges for any researcher. In order to properly construct a...
EarthEcho International
STEMExplore: Studying Tree Rings to Reconstruct Fire History and Climate Change
The video features a researcher studying the effect of fire history and climate on a type of tree changing from conifers to shrubs. Using tree rings, he reconstructs the history of Oak Shrub Fields and matches fire events with other...
Professor Dave Explains
Introduction to Dendrochronology
Now that we've gone over all the basics in our study of botany, it's time to start digging into some more advanced topics. First we will examine the field of dendrochronology over five tutorials. This is the study of trees over time, and...
Next Animation Studio
Heat and evaporation causing “irreversible” drying of Mongolia
Record high temperatures in the region are accelerated by soil drying, and together these changes are magnifying the decline of soil water.
Curated Video
New York City Scientists Are Exploring History Through Tree Rings
Timber samples are giving scientists a look into climate conditions a tree has experienced in its lifetime.
SciShow
What's The Oldest Tree in the World?
How do you determine the age of a tree without cutting it down? An earth science video presents two possible trees as the oldest, and viewers see they have very little in common. The first appears large and looks almost dead while...
Khan Academy
Khan Academy: A Renaissance Cabinet Rediscovered
A cabinet was believed to be a fake made in the 1800s. Through scientific, visual, and archival analysis, scholars proved it was made in 1580 in Burgundy.
Science Friday Initiative
Science Friday: Tree Rings Tell Tales of Ancient Fires and Climate
Are the movements of wildfires as predictable as the weather? And does climate change cause bigger, hotter blazes?