Roger Doiron wants everyone to plant a garden. He’s the founder of Kitchen Gardeners International, a network of home gardeners.

Ron Finley plants vegetable gardens in South Central LA -- in abandoned lots, traffic medians, along the curbs. Why? For fun, for defiance, for beauty and to offer some alternative to fast food in a community where "the drive-thrus are killing more people than the drive-bys."

It's not the end of the world, but as we know, it never hurts to be prepared.

William Li heads the Angiogenesis Foundation, a nonprofit that is re-conceptualizing global disease fighting.

Andras Forgacs produces animal products -- meat and leather -- without the animal.

In 1968, Dr. Robert Ho Man Kwok felt ill after dinner at a Chinese restaurant and wrote a letter to a medical journal connecting his symptoms to MSG. His letter would change the world's relationship with MSG, inspiring international panic, biased science and sensationalist journalism for the next 40 years. So what is this seasoning, and is it ac...

Could smartphones and cameras be our most powerful weapons for social justice? Through her organization Witness, Yvette Alberdingk Thijm is developing strategies and technologies to help activists use video to protect and defend human rights. She shares stories of the growing power of distant witnesses -- and a call to use the powerful tools at ...

A collaboration between Great Big Story and TED, this series reveals the incredible things that happen when someone unveils an idea so inspiring it moves others to act. Watch the stories of people whose lives have been intrinsically changed by the idea in a TED Talk.

Food is a shared necessity -- but also a shared way of thinking, argues Carolyn Steel. Looking at food networks offers an unusual and illuminating way to explore how cities evolved.

What can we expect our kids to learn if they're hungry or eating diets full of sugar and empty of nutrients? Former White House Chef and food policymaker Sam Kass discusses the role schools can play in nourishing students' bodies in addition to their minds.

We are what we spend. Social entrepreneur Andrew Youn sees this as an opportunity. His nonprofit, One Acre Fund, helps small farmers lift themselves out of poverty, with incredible results -- and it's grown three-fold in size since receiving investment from The Audacious Project. With cool candor, he imagines what could happen if we put just one...

Green, leafy, often delicious: Plants are all around us and make the ecosystem work. Hear from gardeners, vegetarians, designers and conservationists on the wonderful world of plants and vegetables.

Co-founder of FEED and creator of The 30 Project, Ellen Gustafson is trying to change the way the world eats.

Fadi Chehadé is focused on finding ways for society to benefit from technology and strengthening international cooperation in the digital space.

Vishal Vaid brings a modern perspective to the traditional music of India, creating melodies that evoke his culture’s past while shaping popular music’s future.

Biochar is a kind of charcoal that removes CO2 from the atmosphere, helping yield healthy crops and even producing abundant renewable energy in the form of electricity as it's made. This exciting climate change fighter is ready for scaling now. Entrepreneur Axel Reinaud outlines three ways to make this material more accessible to farmers -- so t...

For billions of people, seafood provides a significant source of protein and nutrition, but over half the seafood we eat isn't caught in the wild, it's grown through aquaculture. Farmed seafood is one of the fastest-growing food industries, but the farming methods echo the problems we've seen in industrial agriculture. Is there a way to sustaina...

What's tasty, abundant and high in protein? Bugs! Although less common outside the tropics, entomophagy, the practice of eating bugs, was once extremely widespread throughout cultures. You may feel icky about munching on insects, but they feed about 2 billion people each day (Mmm, fried tarantulas). They also hold promise for food security and t...

The average farmer in America makes less than 15 cents of every dollar on a product that you purchase at a store. They feed our communities, but farmers often cannot afford the very foods they grow. In this actionable talk, social entrepreneur Mohammad Modarres shows how to put your purchasing power into action to save local agriculture from col...

Farming feeds all of us -- yet in rural communities, farmers are under pressure from mounting climate volatility and limited access to modern tools like the internet. How can agriculture stay resilient and grow with the times? Beth Ford, CEO of the farming co-op Land O'Lakes, shares her plan to establish broadband as a basic right nationwide and...

From "got milk?" to "avocados from Mexico," marketing influences what you eat more than you may realize. But despite the known power of food marketing, farmers in Africa are more likely to receive funding for seed and fertilizer than they are for advertising geniuses. Agricultural development expert Zoë Karl-Waithaka outlines three ways industry...

Chef Barton Seaver presents a modern dilemma: Seafood is one of our healthier protein options, but overfishing is desperately harming our oceans. He suggests a simple way to keep fish on the dinner table that includes every mom's favorite adage -- "Eat your vegetables!"

Marcel Dicke makes an appetizing case for adding insects to everyone's diet. His message to squeamish chefs and foodies: delicacies like locusts and caterpillars compete with meat in flavor, nutrition and eco-friendliness.

For some reason, says educator Al Vernacchio, the metaphors for talking about sex in the US all come from baseball -- scoring, getting to first base, etc. The problem is, this frames sex as a competition, with a winner and a loser. Instead, he suggests a new metaphor, one that's more about shared pleasure, discussion and agreement, fulfillment a...

Barry Schuler's multimedia firm Medior built key interactive technologies for AOL, helping millions connect to the Internet through a simple, accessible interface. Now, through venture capital (and wine appreciation), he wants to do the same for genomics.

National Geographic writer and explorer Dan Buettner studies the world's longest-lived peoples, distilling their secrets into a single plan for health and long life.

Paul Stamets believes that mushrooms can save our lives, restore our ecosystems and transform other worlds.

When you eat something loaded with sugar, your taste buds, your gut and your brain all take notice. This activation of your reward system is not unlike how bodies process addictive substances such as alcohol or nicotine -- an overload of sugar spikes dopamine levels and leaves you craving more. Nicole Avena explains why sweets and treats should ...

Sharing his experience of being held captive in a Taliban prison for 105 days, humanitarian Safi Rauf talks about his life's mission to get food, medicine and other critical supplies to Afghans in need -- and urges the world to bolster aid and establish a peaceful presence in the country during these extraordinarily difficult times. (This talk w...

Whether it's dandelions blooming in your backyard or purslane sprouting from the sidewalk, vegan forager Alexis Nikole Nelson is on a mission to show how freely growing flora could make its way to your plate. With contagious enthusiasm and a live cooking demo, she explains the benefits of expanding your palate to include "wild" foods that are de...