Capitalism has improved the lives of billions of people — something that's easy to forget at a time of great economic uncertainty. But it has left out billions more. They have great needs, but they can't express those needs in ways that matter to markets. So they are stuck in poverty, suffer from preventable diseases and never have a chance to make the most of their lives. Governments and nonprofit groups have an irreplaceable role in helping them, but it will take too long if they try to do it alone. It is mainly corporations that have the skills to make technological innovations work for the poor. To make the most of those skills, we need a more creative capitalism: an attempt to stretch the reach of market forces so that more companies can benefit from doing work that makes more people better off. We need new ways to bring far more people into the system — capitalism — that has done so much good in the world.

http://sethgodin.typepad.com/seths_blog/2008/07/the-web-doesnt.html

Caltech physicist Sean M. Carroll has been wrestling with the mystery of time. Most physical laws work equally well going backward or forward, yet time flows only in one direction. Writing in this month’s Scientific American, Carroll suggests that entropy, the tendency of physical systems to become more disordered over time, plays a crucial role. Carroll sat down recently at Caltech to explain his theory.

One of the most basic facts of life is that the future looks different from the past. But on a grand cosmological scale, they may look the same

Can one person slow global warming? Actually, yes. You—along with scientists, businesses and governments—can create paths to cut carbon emissions. Here is our guide to some of the planet's best ideas.

Want to wreck the environment? Have a baby. Each bundle of joy gobbles up more of the planet's food, clogs garbage dumps with diapers, churns through plastic toys and winds up a gas-guzzling, resource-consuming grown-up like the rest of us. Still, babies are awfully cute. Given that most people still intend to procreate, what's an environmentally conscious parent to do?