<a href=http://marketplace.publicradio.org/features/frozenassets/frozenassets_eaton_infrastructure2.html>Engineering solutions to melting permafrost</a>

All across Alaska, global warming is taking a heavy toll. Bridges are washing out. Roads are buckling. And scientists say the worst is yet to come as engineers race to shore up infrastructure built on melting permafrost. Sam Eaton reports.