Episode 290: Russian doping, assault rifle lawsuit, Abu Sayyaf, NBA jersey ads, blind astronomers, and more

Perdita Felicien on the IAAF's decision to ban Russian track athletes from Rio, Sandy Hook families' unprecedented lawsuit against the makers of the AR-15, hostage negotiations with Abu Sayyaf, calculating NBA jersey ad revenue, Nova Scotia's blind astronomer, the ultimate Day 6 summer reading list, and more.