TED Talks Daily (HD video‪)‬ TED

We tend to celebrate leaders for their dramatic words and actions in times of crisis — but we often overlook truly great leaders who avoid the crisis to begin with. Historian Martin Gutmann challenges us to rethink what effective leadership actually looks like, drawing on lessons from the famed (but disaster-prone) explorer Ernest Shackleton.

What if you could code just by talking out loud? GitHub CEO Thomas Dohmke shows how, thanks to AI, the barrier to entry to coding is rapidly disappearing — and creating software is becoming as simple (and joyful) as building LEGO. In a mind-blowing live demo, he introduces Copilot Workspace: an AI assistant that helps you create code when you speak to it, in any language.

Whether or not you believe the world is doomed might depend on where you get your news, says journalist Angus Hervey. He delivers stories of progress that mainstream media organizations missed last year — from advances in clean energy to declining rates of extreme poverty, crime and disease — and suggests we should pay more attention to such occurrences. "If we want more people to devote themselves to the task of making progress, then maybe we should be telling more people that it's possible to make progress," says Hervey.

Democracy may be an abstract concept, but it holds the very essence of our autonomy and humanity, says lawyer and human rights advocate Fatma Karume. Sharing her journey navigating a tumultuous political transition in Tanzania that put her life at risk, she highlights the importance of speaking truth to power and fighting for a brighter democratic future.

There are more than 2,000 firefly species, found on every continent except for Antarctica — an astonishing diversity of movement and light. Firefly scientist Wan Faridah Akmal Jusoh explores the mysteries of these little beetles that light up the night and details her quest to discover and protect new species as their habitats are at risk of disappearing.

What you experience through your senses — sight, smell, hearing, taste and touch — can impact how healthy you are and how long you live, says neurobiologist Christi Gendron. She explores how environmental cues like temperature, light and even just the sight of death have influenced the lifespan of fruit flies, suggesting your everyday perceptions may have direct repercussions on your ability to live a long, healthy life.