19-43 Segment 1: Climate Change = Less Nutritious Foods

Rising levels of carbon dioxide in the atmosphere are making crops grow bigger & faster. However, researchers have found that these crops contain significantly lower levels of protein, iron, zinc, and other important nutrients, potentially endangering nutrition for hundreds of millions of people. Experts explain the effect will get worse as CO2 levels continue to rise, and what might be done to combat the problem.

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19-39 Segment 1: Genetic Testing and Family Secrets

The availability of consumer DNA tests and databases has allowed long-hidden family secrets to be revealed, including mistaken paternity and unknown siblings. It has also taken the anonymity away from some cases of sperm donation. Two experts discuss the ethics of overturning this promised secrecy and the impact that the revelation of secrets can have on entire families.

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19-07 Segment 1: When Law Enforcement and Trauma Care Collide

Many patients arrive in the emergency room as a result of violence or car crashes—events in which police have an investigative interest. Sometimes, police needs clash with trauma care, and priorities are hashed out case by case. Experts discuss which priorities come first and when, and the procedures needed to smooth out sometimes contentious interaction.

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19-06 Segment 1: Xenotransplantation—Organ From Other Species

After attempts to use non-human primates as a source of scarce organs for transplant, doctors have turned to pigs for a variety of reasons. They’re now making great progress against the largest hurdle—rejection. One of the world’s foremost xenotransplantation experts discusses how the process might work and what the future might look like for millions of potential organ and tissue recipients.

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