Aaron Morris: How your body could become its own diagnostic lab | TED Fellows

A day in the life of the oracle of Delphi - Mark Robinson

Matthew Mazzotta: Playful, wondrous public spaces built for community and possibility | TED Fellows

Bianca Tylek: The multibillion-dollar US prison industry -- and how to dismantle it | TED Fellows

Adjectives and Adverbs in English - 5 Levels of Difficulty

Why do we have hair in such random places? - Nina G. Jablonski

Yuko Munakata: The science behind how parents affect child development | TED

Nadya Bartol: Better cybersecurity starts with honesty and accountability | TED

The epic of Gilgamesh, the king who tried to conquer death - Soraya Field Fiorio

Simon Sinek: How to discover your "why" in difficult times | TED

Anu Puusa: The case for co-ops, the invisible giant of the economy | TED

Can you solve the Trojan War riddle? - Dennis E. Shasha

Brittany Young: How dirt bikes and STEM ignite ingenuity in Baltimore | TED Fellows

Khalil Ramadi: Electronic pills that could transform how we treat disease | TED Fellows

Could you survive the real Twilight Zone? - Philip Renaud and Kenneth Kostel

Katie Mack: The death of the universe -- and what it means for life | TED Fellows

The woman who stared at the Sun - Alex Gendler

Dominic Price: What's your happiness score? | TED

Run, sail, or hide? How to survive the destruction of Pompeii - Gary Devore

IELTS Writing Task 2 Analysis - Understand & Correctly Answer IELTS Writing Task 2

The Future of Flying Is Electrifying | Cory Combs | TED Countdown

Can you be awake and asleep at the same time? - Masako Tamaki

Marcos Aguiar: 7 tools for building a business people trust | TED

What happens to your brain during a migraine - Marianne Schwarz

Rumaitha Al Busaidi: Women and girls, you are part of the climate solution | TED Countdown

Should you donate your DNA to help cure diseases? - Greg Foot

Why corporate diversity programs fail -- and how small tweaks can have big impact | Joan C. Williams

What really happened during the Attica Prison Rebellion - Orisanmi Burton

Adam Grant: What frogs in hot water can teach us about thinking again | TED

What’s in the air you breathe? - Amy Hrdina and Jesse Kroll

How to Give and Receive Feedback in English - Business English Lesson

How one design flaw almost toppled a skyscraper - Alex Gendler

John Marshall: 3 strategies for effectively talking about climate change | TED Countdown

How to get a word added to the dictionary - Ilan Stavans

Meet the bluefin tuna, the toughest fish in the sea - Grantly Galland and Raiana McKinney

How long should your naps be? - Sara C. Mednick

How Your Memory Works -- and Why Forgetting Is Totally OK | Lisa Genova | TED

Can we learn to talk to sperm whales? | David Gruber | TED

Demolition, disease, and death: Building the Panama Canal - Alex Gendler

Can you solve Dongle's Difficult Dilemma? - Dennis E. Shasha

Megan McArthur: A NASA astronaut's lessons on fear, confidence and preparing for spaceflight | TED

Describe Trends in Business English - Describing Statistics, Sales and Market Trends

How do wind turbines work? - Rebecca J. Barthelmie and Sara C. Pryor

How the world’s tallest skyscraper was built - Alex Gendler

The exploitation of US college athletes | Tim Nevius

The world’s most painful insect sting - Justin Schmidt

Language around gender and identity evolves (and always has) | Archie Crowley

The seeds of change helping African farmers grow out of poverty | Andrew Youn