For almost a decade, scientists chased the source of a deadly new virus through China's tallest mountains and most isolated caverns. They finally found it in the bats of Shitou Cave. The virus in question was a coronavirus that caused an epidemic of severe acute respiratory syndrome, or SARS, in 2003. So what exactly is a coronavirus, and how does it spread? Elizabeth Cox explains. [Directed by Anton Bogaty, narrated by Bethany Cutmore-Scott, music by Jarrett Farkas].

When you stop comparing yourself to others, you can accomplish great things, says wheelchair athlete Dean Furness. He shares how, after losing the use of his legs in an accident, he discovered a powerful new mindset focused on redefining his "personal average" and getting better little by little.

A new virus emerges and spreads like wildfire. In order to contain it, researchers must first collect data about who's been infected. Two main viral testing techniques are critical: one tells you if you have the virus and the other shows if you've already had it. So, how exactly do these tests work? Cella Wright explores the science of PCR tests and immunoassays. [Directed by Hype CG, narrated by Bethany Cutmore-Scott, music by Gabriel Maia].

The coronavirus pandemic shattered the global economy. To put the pieces back together, we need to make sure money is going to the countries that need it the most -- and that we rebuild financial systems that are resilient to shocks, says Kristalina Georgieva, managing director of the International Monetary Fund. She takes us inside the massive economic stimulus efforts leading the world toward recovery and renewal and discusses what it will take for countries to emerge from this "great transformation" even stronger than before. (This virtual conversation, hosted by head of TED Chris Anderson and current affairs curator Whitney Pennington Rodgers, was recorded on May 18, 2020.)

What if we could help people in crisis anytime, anywhere with a simple text message? That's the idea behind Crisis Text Line, a free 24-hour service that connects people in need with trained, volunteer crisis counselors -- "strangers helping strangers around the world, like a giant global love machine," as cofounder and CEO Nancy Lublin puts it. Learn more about their big plans to expand to four new languages, providing a third of the globe with crucial, life-saving support. (This ambitious plan is a part of the Audacious Project, TED's initiative to inspire and fund global change.)

Examining the facts and figures of the coronavirus outbreak, epidemiologist Larry Brilliant evaluates the global response in a candid interview with head of TED Chris Anderson. Brilliant lays out a clear plan to end the pandemic -- and shows why, to achieve it, we'll have to work together across political and geographical divides. "This is not the zombie apocalypse; this is not a mass extinction event," he says. "We need to be the best version of ourselves." (Recorded April 22, 2020)

Before the coronavirus pandemic, bioengineer Jim Collins and his team combined the power of AI with synthetic biology in an effort to combat a different looming crisis: antibiotic-resistant superbugs. Collins explains how they pivoted their efforts to begin developing a series of tools and antiviral compounds to help fight COVID-19 -- and shares their plan to discover seven new classes of antibiotics over the next seven years. (This ambitious plan is a part of The Audacious Project, TED's initiative to inspire and fund global change.)

Health care workers are under more stress than ever before. How can they protect their mental health while handling new and complex pressures? TED Fellow Laurel Braitman shows how writing and sharing personal stories helps physicians, nurses, medical students and other health professionals connect more meaningfully with themselves and others -- and make their emotional well-being a priority.

Your hands, up close, are anything but smooth. With peaks and valleys, folds and rifts, there are plenty of hiding places for a virus to stick. If you then touch your face, the virus can infect you. But there are two extraordinarily simple ways you can keep that from happening: soap and water, and hand sanitizer. So which is better? Alex Rosenthal and Pall Thordarson investigate. [Directed by Artrake Studio, narrated by Addison Anderson].

By some estimates, work-related stress drains the US economy of nearly 300 billion dollars a year -- and it can hurt your productivity and personal health too, says wellness advocate Rob Cooke. He shares some strategies to help put your mental, physical and emotional well-being back at the forefront.