Holocaust survivor Werner Reich recounts his harrowing adolescence as a prisoner transported between concentration camps -- and shares how a small, kind act can inspire a lifetime of compassion. "If you ever know somebody who needs help, if you know somebody who is scared, be kind to them," he says. "If you do it at the right time, it will enter their heart, and it will be with them wherever they go, forever."

Bones might seem rock-solid, but they're actually quite porous inside. Most of the large bones of your skeleton have a hollow core filled with soft bone marrow. Marrow's most essential elements are blood stem cells and for patients with advanced blood cancers like leukemia and lymphoma, the best chance for a cure is often a bone marrow transplant. How does this procedure work? Melody Smith explains. [Directed by Artrake Studio, narrated by Bethany Cutmore-Scott, music by Harlan Hodges / WORKPLAYWORK].

As the sun rises, something royal stirs inside a pile of firewood. It's the wasp queen; one of thousands who mated in late autumn and hibernated through the winter. Now she must emerge into the spring air to begin her reign. This queen is the lone survivor of her old hive, and now, she must become the foundress of a new one. Kenny Coogan details a year in the life of a wasp queen. [Directed Biljana Labovic, animated by Denis Chapon, narrated by Addison Anderson, music Stephen LaRosa].

Some common life-saving medicines, such as insulin, are made of proteins so large and fragile that they need to be injected instead of ingested as pills. But a new generation of medicine -- made from smaller, more durable proteins known as peptides -- is on its way. In a quick, informative talk, molecular engineer and TED Fellow Christopher Bahl explains how he's using computational design to create powerful peptides that could one day neutralize the flu, protect against botulism poisoning and even stop cancer cells from growing.

Using low-cost virtual reality, education activist Jessica Ochoa Hendrix helps bring science to life in schools across the US. In this quick talk, she explains how a VR experience she developed invites students to explore underwater ecosystems as if they're marine biologists -- and envision themselves in other careers they might not have otherwise imagined.

Here's a paradox: as companies try to streamline their businesses by using artificial intelligence to make critical decisions, they may inadvertently make themselves less efficient. Business technologist Sylvain Duranton advocates for a "Human plus AI" approach -- using AI systems alongside humans, not instead of them -- and shares the specific formula companies can adopt to successfully employ AI while keeping humans in the loop.

Parasitic worms date back thousands of years, causing diseases that limit human potential. But today, effective treatment against them requires just a few pills, taken once or twice a year. With 1.7 billion people at risk of infection, Ellen Agler and her team at the END Fund are imagining a world without disease caused by worms. Learn about how they're seeking to lower treatment costs, amplify prevention, support governments and nurture local leadership. This ambitious plan is a part of The Audacious Project, TED's initiative to inspire and fund global change. (Voiced by Ama Adi-Dako)

"A political cartoon is a barometer of freedom," says Rayma Suprani, who was exiled from her native Venezuela for publishing work critical of the government. "That's why dictators hate cartoonists." In a talk illustrated with highlights from a career spent railing against totalitarianism, Suprani explores how cartoons hold a mirror to society and reveal hidden truths -- and discusses why she keeps drawing even when it comes at a high personal cost. (In Spanish with consecutive English translation)

Black history taught in US schools is often watered-down, riddled with inaccuracies and stripped of its context and rich, full-bodied historical figures. Equipped with the real story of Rosa Parks, professor David Ikard highlights how making the realities of race more benign and digestible harms us all -- and emphasizes the power and importance of historical accuracy.

In 1972, Thomas Sankara was swept into the revolution seeking to wrest control of Madagascar from France's lingering colonial rule. The protests inspired the West African native to read works by socialist leaders and seek wisdom from military strategy. Leaving Madagascar in 1973, he was determined to free his country from its colonial legacy. Lisa Bacon details the life of the revolutionary icon. [Directed by Tomás Pichardo-Espaillat, narrated by Christina Greer, music by WORKPLAYWORK / Cem Misirlioglu].