TVHON — Edutainment
Watch entertaining videos that teach you something new. Every clip on TVHON drops a surprising fact — fun to watch, easy to remember.
Latest videos
- The Octopus Death Spiral Starts With the Optic Gland
Many octopuses die after reproducing, and researchers found that optic-gland signals help drive the female octopus from feeding and hunting into brooding and decline.
Tags: Biology
- The Tiny Irukandji Jellyfish Can Cause a Terrifying Sense of Impending Doom
Tiny Irukandji jellyfish can trigger severe illness, including intense pain, vomiting, cramps, sweating and a terrifying sense of impending doom.
Tags: Biology
- Sharks Can Sense Water Vibrations and Electric Fields
Sharks use the five familiar senses plus two extra abilities: sensing water vibrations and detecting tiny electric fields from living animals.
Tags: Biology
- How Sperm Whales May Use Glowing Plankton to Find Fish
Sperm whales may use glowing plankton as a clue: when fish approach, the plankton flash, helping whales locate and eat the fish.
Tags: Biology
- How 2 Meters of DNA Fit Inside a Tiny Human Cell
A human cell packs about 2 meters of DNA into a nucleus only about 6 micrometers wide, far thinner than a human hair.
Tags: Biology
- Why Astronauts Float Even Though Earth Gravity Is Still Strong
At about 400 km up, Earth gravity is still nearly 90% as strong as on the surface, but astronauts float because they are in continuous free fall.
Tags: Physics
- The Ocean Holds an Estimated 20 Million Tons of Gold
The oceans contain an estimated 20 million tons of gold, but it is so spread out that extracting it profitably is not currently practical.
Tags: Earth
- The Black Hole Image That Needed Half a Ton of Hard Drives
The first black hole image used about 5 petabytes of data, filling over half a ton of hard drives, and some of it was faster to fly than send online.
Tags: Astronomy
- The Vampire Squid Is Neither a True Squid Nor an Octopus
The vampire squid is a distinct deep-sea cephalopod with enormous eyes and a strange defense: it can release glowing, sticky mucus when threatened.
Tags: Biology
- Sleep and Cognitive Performance Are Linked, but the Ideal Amount Is Still Unclear
Sleep loss can hurt memory, attention and mental speed, while extra sleep may help, but real-world long-term sleep patterns are less clear.
Tags: Mind
- The Fish Scientists Thought Was Extinct for 66 Million Years
Scientists thought coelacanths vanished 66 million years ago, until a living one was caught in a fishing net in 1938.
Tags: Biology
- Scientists Proposed Three Extinct Animals for Ecological Revival
In 2016, ecologists suggested three extinct animals worth considering for revival because they could help restore lost ecosystem functions.
Tags: Biology