# No one really knows what a tree is

- Institution: TED
- Department: TED-Ed
- Speaker: Max G. Levy
- Year: 2025
- Level: For everyone
- Language: English
- Subjects: Biology, Teaching and learning
- Source: [TED](https://www.ted.com/talks/max_g_levy_no_one_really_knows_what_a_tree_is)
- Licence: [CC BY-NC-ND 4.0](https://creativecommons.org/licenses/by-nc-nd/4.0/) (Non-commercial use only, and no changed versions.)
- Who can watch: Tweens profiles and older (sources give no ratings; placed by Invisible Network from the source's own words)

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. \[Directed by Evandro D'Hipolito, narrated by Alexandra Panzer, music by Cem Misirlioglu, WORKPLAYWORK\].

## Lectures

1. [No one really knows what a tree is](https://invisiblenetwork.ai/learn/ted/max_g_levy_no_one_really_knows_what_a_tree_is/2f49f9758f73), 6 min (TED's player)