The Virgin Mary in Roman Catholic and Protestant Thought

In this episode, David Fry and Johnathan Arnold discuss the doctrine of Mary.

1. What is the Roman Catholic doctrine of Mary (four Marian dogmas)?
2. Should we call Mary the "Mother of God" (Theotokos)?
3. Should we venerate Mary?
4. Did Mary remain a virgin (perpetual virginity)?
5. Was Mary born without original sin (immaculate conception)?
6. Was Mary a co-redemptrix?
7. Was Mary assumed into heaven?
8. Should we ask Mary to intercede for us?