Asking for help is tough. But to get through life, you have to do it all the time. So how do you get comfortable asking? In this actionable talk, social psychologist Heidi Grant shares four simple rules for asking for help and getting it -- while making the process more rewarding for your helper, too.

Being open and vulnerable with your loneliness, sadness and fear can help you find comfort and feel less alone, says writer and artist Jonny Sun. In an honest talk filled with his signature illustrations, Sun shares how telling stories about feeling like an outsider helped him tap into an unexpected community and find a tiny sliver of light in the darkness.

In 2008, two 9,000-year old skeletons were found with their bones infected by an all too familiar bacterium. The ancient Greeks knew its effects as phthisis; the Incans called it chaky oncay; and today we call it tuberculosis, or TB. TB is still one of the world's most infectious killers, causing more deaths than malaria or even HIV. How has it persisted for so long? Melvin Sanicas investigates. [Directed by Augenblick Studios, narrated by Addison Anderson, music by GDM Production Music].

"The hood is good," says Jon Gray of the Bronx, New York-based creative collective Ghetto Gastro. Working at the intersection of food, design and art, Gray and his team work to honor the soul and history of their community, while also applying their unbridled creativity and expansive imagination to unexpected, otherworldly collaborations. Learn more about how they're creating and investing in their home borough -- bringing the Bronx to the world and vice versa.

The world is getting closer to achieving one of the most important public health goals of our time: eradicating HIV. And to do this, we won't even have to cure the disease. We simply have to stop HIV from being transmitted until eventually it fizzles out. Philip A. Chan explores the preventive strategies helping us tackle HIV and the possibility of ending the epidemic. [Directed by Antimatter, narrated by Addison Anderson, music by André Aires / AIM Creative Studios].

Why do some gatherings take off and others don't? Author Priya Parker shares three easy steps to turn your parties, dinners, meetings and holidays into meaningful, transformative gatherings.

Anger researcher Ryan Martin draws from a career studying what makes people mad to explain some of the cognitive processes behind anger -- and why a healthy dose of it can actually be useful. "Your anger exists in you ... because it offered your ancestors, both human and nonhuman, an evolutionary advantage," he says. "[It's] a powerful and healthy force in your life."

How can we make space for marginalized communities to tell their stories? Raised by migrant farm workers, attorney Mónica Ramírez points out the injustices this often unseen and isolated group faces -- from wage theft and sexual harassment to dangerous working conditions -- and advocates for the solutions they need.

Poet Marie Howe introduces us to "ecopoetry," which asks the human ego to step aside and "let the whole living world move into the poem." She reads her poem "The Singularity," inspired by the physics that created the earth.

Resistance Revival Chorus, a collective of more than 60 women, fill the TED World Theater with a rhapsodic performance of "The Rich Man's House" and "Woke Up This Morning (With My Mind Stayed on Freedom)." They show us how joy can be an act of resistance.