What responsibilities do we, as humans, have to other species?

How do the extinctions of other creatures affect humans directly and indirectly?

Should people give up gains in order to prevent the death of other creatures?

What ethical responsibilities do we have to other creatures on the planet?

Why are decisions about recovery and preservation of these creatures so complicated?

If you were elected president, what would your official policy on endangered species be? What tradeoffs would you make in order to enforce your policy?