Amid climate change, what’s more important?
the latest round of international climate talks this month in Lima, Peru, melting glaciers in the Andes and recent droughts provided a fitting backdrop for the negotiators’ recognition that it is too late to prevent climate change, no matter how fast we ultimately act to limit it. They now confront an issue that many had hoped to avoid: adaptation.
Adapting to climate change will carry a high price tag. Sea walls are needed to protect coastal areas against floods, such as those in the New York area when Superstorm Sandy struck in 2012. We need early-warning and evacuation systems to protect against human tragedies, such as those caused by Typhoon Haiyan in the Philippines in 2013 and by Hurricane Katrina in New Orleans in 2005.
Cooling centers and emergency services must be created to cope with heat waves, such as the one that killed 70,000 in Europe in 2003. Water projects are needed to protect farmers and herders from extreme droughts, such as the one that gripped the Horn of Africa in 2011. Large-scale replanting of forests with new species will be needed to keep pace as temperature gradients shift toward the poles.
Because adaptation won’t come cheap, we must decide which investments are worth the cost.