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Our Expert Voices conversation on food security.

Food security in the context of a growing population and in the face of climate change is a tremendous challenge. But the main bottleneck is not the lack of science or technology — it's small scale farmers' access to land and markets. These farmers produce the bulk of the world's food, but are squeezed into less than a quarter of the planet's farmland.

What farmers need: Reforms that give them access to land, promote local markets rather than subsidizing export commodities, and support indigenous agroecological farming methods that help to fight the climate crisis. Farms capture huge amounts of carbon back into the world's farmlands and result in resilient farming systems more tolerant to extreme weather patterns.

Bottom line: Top-down laboratory-developed technological 'solutions' under control of agribusiness, such as genetically engineered seeds, more agrochemicals and extreme mechanization, only lead us deeper into the food and climate crises.

Other voices in the conversation:

Pamela Ronald, plant geneticist, UC Davis, Focus on results new technologies bring

Eric Schulze, molecular biologist, Memphis Meats, Science can't be at the expense of culture

Deborah Delmer, plant biologist, Genetic modification is an important part

Go deeper

23 mins ago - Sports

Simone Biles pulls out of Olympic floor finals event

Photo: LOIC VENANCE/AFP via Getty Images

Simone Biles will not be competing in the floor exercise event to prioritize her mental well-being, USA Gymnastics announced Sunday morning local time.

What's happening: "Simone has withdrawn from the event final for floor and will make a decision on beam later this week," USA Gymnastics said in a statement. "Either way, we’re all behind you, Simone."

31 mins ago - Sports

U.S. wins gold in men's 4x100-meter medley relay

USA's Ryan Murphy (L) and USA's Caeleb Dressel celebrate winning the final of the men's 4x100m medley relay swimming event during the Tokyo 2020 Olympic Games at the Tokyo Aquatics Centre in Tokyo on Sunday. Photo: Odd Andersen/AFP via Getty Images

Team USA win the gold medal in the men's 4x100-meter medley relay, setting a new world record in the process on Sunday morning local time.

Driving the news: American Caeleb Dressel won his fifth Tokyo Games gold medal during the event.

2 hours ago - Sports

U.S. swimmer Caeleb Dressel wins 50-meter freestyle final, sets new Olympic record

Caeleb Dressel during the men's 100m butterfly final at Tokyo Aquatics Centre on July 31, 2021 in Tokyo, Japan. Photo: Xavier Laine/Getty Images

American swimmer Caeleb Dressel won gold and set an Olympic record in the men's 50-meter freestyle on Saturday, beating his own world record that he set in 2020.

Details: Dressel didn't take a breath while in the pool to win the race in 21.07 seconds. France's Florent Manaudou won the silver medal, and Brazil’s Bruno Fratus bagged the bronze.