On this week's show: Using genetics to catch elephant poachers, the trouble with the letter R, and a roundup of daily news stories.

On this week's show: Tracking aquatic animals, cochlear implants and emotion recognition, and a roundup of daily news stories.

On this week's show: A changing climate for China's tea crop, and a roundup of daily news stories.

On this week's show: Testosterone testing and women's eligibility to compete in elite sport, and a roundup of daily news stories.

On this week's show: Cuban science looks toward the future, and a roundup of daily news stories.

On this week's show: Measles vaccination plays a major role in preventing childhood mortality from other infectious diseases, and a roundup of daily news stories.

On this week's show: Sustainable seafood from developing countries, and a roundup of daily news stories.

On this week's show: The 25th Anniversary of the Hubble Space Telescope, and a roundup of daily news stories.

On this week's show: The human-dog bond, and a roundup of daily news stories.

On this week's show: Mountain gorilla genomes, and a roundup of daily news stories.