Public health historian Gerald Markowitz reminds us that the problem of lead poisoning is anything but new.
Conventional investing wisdom over the past couple years was that emerging markets, such as China, India and Brazil, are volatile but vibrant, whereas developed markets are stable but sluggish.
But it looks like emerging markets might be losing their shine.
Jason Bellini of the Wall Street Journal joins us.
Robin Young and Jeremy Hobson are hitting the road to cover the elections. Our Tumblr brings you behind the scenes.