For if we choose only to expose ourselves to opinions and viewpoints that are in line with our own, studies suggest that we become more polarized, more set in our ways.

WHITEHOUSE: President Obama at Michigan Commencement

But we'll only know if CETP works, he says, if Merck, Roche or another company conducts further studies on a different drug.

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Two areas where we are particularly interested in working together is on the issue of climate change, where we are helping to create a climate change study center in Indonesia that I think can provide enormous support for not only studies there but also in the region and around the world.

WHITEHOUSE: President Obama & Indonesian President Yudhoyono at G20 Summit | The White House