"I think it is critical to understand how impossible it is to live on less than $1 per day, even though nearly 1/3 of the world’s population is having to do just that. The next billion people are living on less than $2 per day!"

This is a ridiculous statement. India and south-east Asia are proof that it is quite the opposite of "impossible" to live on less than a dollar a day. What seems to be misunderstood is the relative buying power of a dollar in each place. Where I can hardly get a McDonald's hamburger for a dollar in the USA, in India that dollar will pay for lunch for the whole family.