Climate change could lead to mass migration as people head north to survive

Read MoreThe Earth’s temperature is expected to drastically increase over the next 50 years, which will likely force entire nations of people to travel north for survival. ProPublica senior environmental reporter Abrahm Lustgarten mapped out what this migration might look like. He joined CBSN to discuss.The Earth’s temperature is expected to drastically increase over the next 50 years, which will likely force entire nations of people to travel north for survival. ProPublica senior environmental reporter Abrahm Lustgarten mapped out what this migration might look like. He joined CBSN to discuss.