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How tall can a tree grow? - Valentin Hammoudi What makes a tree grow tall? And do trees ever stop growing? Explore how photosynthesis and gravity can affect and limit the height of trees. --Reaching heig...
What if there were 1 trillion more trees? - Jean-François Bastin
Why do animals have such different lifespans? - Joao Pedro de Magalhaes
Is fire a solid, a liquid, or a gas? - Elizabeth Cox
How Trees Grow | Eco Facts | One Tree Planted
Iceland's secret power - Jean-Baptiste P. Koehl
How the world's longest underwater tunnel was built - Alex Gendler
How Trees Grow
Why is Mount Everest so tall? - Michele Koppes
How plants tell time - Dasha Savage
Do animals have language? - Michele Bishop
The journey to Pluto, the farthest world ever explored - Alan Stern
Can plants talk to each other? - Richard Karban
What would happen if every human suddenly disappeared? - Dan Kwartler
Why certain naturally occurring wildfires are necessary - Jim Schulz
Can we create the "perfect" farm? - Brent Loken
Why are sloths so slow? - Kenny Coogan
How Trees Bend the Laws of Physics
Vultures: The acid-puking, plague-busting heroes of the ecosystem - Kenny Coogan
What's hidden among the tallest trees on Earth? - Wendell Oshiro
These animals are also plants … wait, what? - Luka Seamus Wright
Can you survive nuclear fallout? - Brooke Buddemeier and Jessica S. Wieder
What happens if you cut down all of a city's trees? - Stefan Al
What would happen if you didn’t drink water? - Mia Nacamulli
History through the eyes of a chicken - Chris A. Kniesly
The amazing ways plants defend themselves - Valentin Hammoudi
The wild world of carnivorous plants - Kenny Coogan
What if cracks in concrete could fix themselves? - Congrui Jin
Where does gold come from? - David Lunney
Why are earthquakes so hard to predict? - Jean-Baptiste P. Koehl
A brie(f) history of cheese - Paul Kindstedt
How do crystals work? - Graham Baird
Whatever happened to acid rain? - Joseph Goffman
Jellyfish predate dinosaurs. How have they survived so long? - David Gruber
20 Most Extreme Comparisons You've Ever Seen