per year by 2100 but will not be a uniform global event. With an estimated70%of coastlines affected and about40%of the world’s population living within coastal regions, a sea level rise of just a couple meters will displace billions of people and dramatically alter their day-to-day lives...
While the opening of a year-round ice-free Arctic passage between the Atlantic and Pacific oceans would have some commercial benefits, these are considerably outweighed by the negatives. Detrimental effects include increased iceberg hazards to shipping and loss of icealbedo(the reflection of sunshine)...