TED-Ed loves trees!

Dig into the system that helps scientists distinguish trees from other varieties of plants, and what characteristics make a tree. -- Plants assume a variety of forms, and trees are just one of them. What makes or breaks a tree can come down to some pretty specific characteristics, based on how the plant develops as a result of how it evolved. Trees don’t all comprise one closely related group, like insects or mammals. So, how exactly do trees get classified as trees? Max G. Levy explains what distinguishes these woody plants. Lesson by Max G. Levy, directed by Evandro D'Hipolito. Support Our Non-Profit Mission ---------------------------------------------- Support us on Patreon: Check out our merch: ---------------------------------------------- Connect With Us ---------------------------------------------- Sign up for our newsletter: Follow us on Facebook: Find us on Twitter: Peep us on Instagram: ---------------------------------------------- Keep Learning ---------------------------

Dig into the system that helps scientists distinguish trees from other varieties of plants, and what characteristics make a tree. -- Plants assume a variety of forms, and trees are just one of them. What makes or breaks a tree can come down to some pretty specific characteristics, based on how the plant develops as a result of how it evolved. Trees don’t all comprise one closely related group, like insects or mammals. So, how exactly do trees get classified as trees? Max G. Levy explains what distinguishes these woody plants. Lesson by Max G. Levy, directed by Evandro D'Hipolito. Support Our Non-Profit Mission ---------------------------------------------- Support us on Patreon: Check out our merch: ---------------------------------------------- Connect With Us ---------------------------------------------- Sign up for our newsletter: Follow us on Facebook: Find us on Twitter: Peep us on Instagram: ---------------------------------------------- Keep Learning ---------------------------

Join #TeamTrees and become a part of the biggest YouTube collaboration in history! Let’s work together to reforest our beautiful world, combat climate change and secure the funds to plant 20 million trees by the first day of 2020! -- What if every YouTube creator and YouTube community member joined forces to acheive a singular goal? Team Trees' mission is to help reforest our beautiful world by raising funds to plant at 20 million trees by 2020. Reforestation is one of the most effective natural solutions to the climate crisis, and if we raise $20 million by the end of 2019, the Arbor Day Foundation will plant 20 million trees across 6 continents. TED-Ed Community, let's spread the word and plant some trees! Donate by clicking on the blue "Donate" button. And remember, every dollar counts! Learn more about this campaign: Learn more about the Arbor Day Foundation:

Join #TeamTrees and become a part of the biggest YouTube collaboration in history! Let’s work together to reforest our beautiful world, combat climate change and secure the funds to plant 20 million trees by the first day of 2020! -- What if every YouTube creator and YouTube community member joined forces to acheive a singular goal? Team Trees' mission is to help reforest our beautiful world by raising funds to plant at 20 million trees by 2020. Reforestation is one of the most effective natural solutions to the climate crisis, and if we raise $20 million by the end of 2019, the Arbor Day Foundation will plant 20 million trees across 6 continents. TED-Ed Community, let's spread the word and plant some trees! Donate by clicking on the blue "Donate" button. And remember, every dollar counts! Learn more about this campaign: Learn more about the Arbor Day Foundation:

View full lesson: Can plants talk to each other? It certainly doesn’t seem that way: They don’t have complex sensory or nervous systems, like animals do, and they look pretty passive. But odd as it sounds, plants can communicate with each other — especially when they’re under attack. Richard Karban explains how. Lesson by Richard Karban, animation by Yukai Du.

View full lesson: Can plants talk to each other? It certainly doesn’t seem that way: They don’t have complex sensory or nervous systems, like animals do, and they look pretty passive. But odd as it sounds, plants can communicate with each other — especially when they’re under attack. Richard Karban explains how. Lesson by Richard Karban, animation by Yukai Du.

View full lesson: Morning glories unfurl their petals like clockwork in the early morning. A closing white waterlily signals that it’s late afternoon. And moon flowers, as their name suggests, only bloom under the night sky. What gives plants this innate sense of time? Dasha Savage investigates how circadian rhythms act as an internal timekeeper for flora and fauna alike. Lesson by Dasha Savage, animation by Avi Ofer.

View full lesson: Morning glories unfurl their petals like clockwork in the early morning. A closing white waterlily signals that it’s late afternoon. And moon flowers, as their name suggests, only bloom under the night sky. What gives plants this innate sense of time? Dasha Savage investigates how circadian rhythms act as an internal timekeeper for flora and fauna alike. Lesson by Dasha Savage, animation by Avi Ofer.

View full lesson: When Stephen Sillett was a boy, he took to the forests of Pennsylvania with his brother and grandmother. Looking up into the dense branches and leaves, his curiosity was piqued: What was hidden up there? Wendell Oshiro tells the story of an adult Sillett's bold (if not a little dangerous) exploration of the canopy of an ancient redwood and details some of the fascinating discoveries he made. Lesson by Wendell Oshiro, animation by Black Powder Design.

View full lesson: When Stephen Sillett was a boy, he took to the forests of Pennsylvania with his brother and grandmother. Looking up into the dense branches and leaves, his curiosity was piqued: What was hidden up there? Wendell Oshiro tells the story of an adult Sillett's bold (if not a little dangerous) exploration of the canopy of an ancient redwood and details some of the fascinating discoveries he made. Lesson by Wendell Oshiro, animation by Black Powder Design.