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When the ocean changes, the planet changes -- and it all starts with microbes, says biological oceanographer Angelicque White. Backed by decades of data, White shares how scientists use these ancient microorganisms as a crucial barometer of ocean health -- and how we might rejuvenate them as marine temperatures steadily rise.

If you: do laundry, are (or have been) pregnant, tidy up, shop for your household or do similar labor, then by GDP standards, you're unproductive. In this visionary talk, economist Marilyn Waring seeks to correct the failures of this narrow-minded system, detailing why we deserve a better way to measure growth that values not just our own livelihood but the planet's as well.

When we witness something amazing, many of us instinctively pull out our phones and snap pictures. Is this obsession with photographing everything impacting our experiences? In a meditative talk, Erin Sullivan reflects on how being more intentional with her lens enhanced her ability to enjoy the moment -- and could help you do the same, too.

There's no shortage of resources to help people change their health behaviors -- but far too often, these resources aren't accessible in underserved communities, says physician Priscilla Pemu. Enter "culturally congruent coaching," a program Pemu and her team developed to help patients with chronic diseases monitor their health with the assistance of a coach from their community. Learn more about how this approach transcends language and cultural barriers -- and could potentially transform health care in America.

By 2050, the global population is projected to reach 9.8 billion. How are we going to feed everyone? Investment-banker-turned-farmer Stuart Oda points to indoor vertical farming: growing food on tiered racks in a controlled, climate-proof environment. In a forward-looking talk, he explains how this method can maintain better safety standards, save money, use less water and help us provide for future generations.

You are more likely to die violently if you live in a middle-income democracy with high levels of inequality and political polarization than if you live in a country at war, says democracy advisor Rachel Kleinfeld. This historical shift in the nature of violence presents an opportunity for everyday voters to act as a great force for change in their unbalanced societies. In this eye-opening talk, Kleinfeld unravels the causes of violence and offers a path to security for the world's deadliest countries.