Conservative projections say rising seas from climate change would displace hundreds of millions of people and cost hundreds of billions of dollars over the next century. Sam Eaton found a scientist with a plan to capitalize on melting icecaps for the sake of everyone.

China's government is promising, by the end of the month, to put in place tough new rules for companies wanting to do business online. The prospect has investors a bit leery. Our Shanghai correspondent Scott Tong talks with Kai Ryssdal about the plan.

New home sales in 2007 fell to their lowest level in almost 13 years -- despite big price cuts by homebuilders, according to the Commerce Department. Bob Moon looks at whether there's reason to believe 2008 home sales will be different.