On today’s podcast, Iran’s president is killed in a helicopter crash; Blue Origin sends the oldest person yet into space; research links a gene to Alzheimer’s disease followed by a discussion about what the gene APOE4 is; then, partitive nouns on Lesson of the Day.

On today’s podcast, the U.N. approves another vaccine for dengue fever; social media has young South Koreans interested in Buddhism; a severe solar storm hits Earth followed by a discussion about why there was no major damage reported; then, ‘probability’ on Lesson of the Day.