The first few feet of sea-level rise alone will displace more than 100 million people worldwide and turn all our major Gulf and Atlantic coast cities into pre- Katrina New Orleans - below sea level and facing super-hurricanes.

On our current path, all our great Gulf and Atlantic coast cities are at risk of meeting the same fate as New Orleans.

The entire western Siberian sub-Arctic region is melting, and it has all happened in the last three or four years.

Do believe that if we fail to act in time, it will be the single biggest regret any of us has at the end of our lives.

Conservatives... are so opposed to government regulations that they are skeptical of anyone who identifies a problem that requires regulatory solutions - and they are inherently accepting of those who downplay such problems.

The last time Earth was 1°C warmer than today, sea levels were 20 feet higher.

Protecting dozens of major coastal cities from future flooding will be challenging enough-rebuilding major coastal cities destroyed by super-hurricanes will be an almost impossible task.